Online Exam 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 Biostatistic Post-RN 2nd semester Quiz no 1. Post-RN 2nd semester Quiz no 1. Nursing with Abdullah Online academy 1 / 50 Which of the following is true about the median? It is influenced by extreme values It divides the data set into two equal parts It is the same as the mode It can only be used for nominal data 2 / 50 Which of the following is not a mode of graphical representation? Pie chart Data matrix Histogram Line graph 3 / 50 The median is a measure of: Central tendency Dispersion Correlation Skewness 4 / 50 The arithmetic mean of the data set {2, 4, 6, 8, 10} is: 4 5 6 7 5 / 50 The median is defined as the: Middle value in a data set when arranged in ascending or descending order Sum of all values divided by the number of values Most frequently occurring value in a data set Difference between the highest and lowest values 6 / 50 What is the shape of a normal distribution curve? Skewed to the right Skewed to the left Bell-shaped Symmetrical and bell-shaped 7 / 50 In a frequency distribution table, the symbol (f) stands for: Frequency Midpoint Mean Class interval 8 / 50 The median is less affected by: Outliers and extreme values The size of the data set The order of the data The range of the data 9 / 50 When the data distribution is negatively skewed, the median: Is closer to the higher end of the data set Is closer to the lower end of the data set Lies exactly at the center of the data set Is always lower than the mean 10 / 50 What is the mean of the following ungrouped data set: 15, 20, 25, 30, 35? 25 20 30 35 11 / 50 A pie chart is most effective for displaying: Proportions of a whole Trends over time Relationships between variables Frequency distributions 12 / 50 The mean and median of a normal distribution are: Equal Different Not related Always zero 13 / 50 The geometric mean is most appropriate for data that is: Normally distributed Positively skewed Nominal Ordinal 14 / 50 The total area under the normal distribution curve to the left of a Z-score of -1 is: 0.8413 0.1587 0.5 0.6826 15 / 50 If the sum of 10 values is 150, what is the mean of the data? 10 15 20 25 16 / 50 When the data distribution is positively skewed, the median: Is closer to the lower end of the data set Is closer to the higher end of the data set Lies exactly at the center of the data set Is always higher than the mean 17 / 50 In a normal distribution, what percentage of the data falls within one standard deviation of the mean? 50% Approximately 68% Approximately 75% Approximately 95% 18 / 50 In a frequency distribution, if the midpoints are 15, 25, 35, 45, and the frequencies are 2, 4, 6, 8 respectively, the mean is: 30 35 40 45 19 / 50 The median is particularly useful when: Data is normally distributed Data is skewed or contains outliers Data has no mode The sample size is very large 20 / 50 If the data set has an even number of observations, the median is found by: Choosing the first value Averaging the two middle values Selecting the last value Choosing the highest value 21 / 50 The mean is calculated by: Dividing the number of data points by the sum of all values Dividing the sum of all values by the number of data points Subtracting the smallest value from the largest value Multiplying the sum of all values by the number of data points 22 / 50 In a histogram, what do the heights of the bars represent? The median of the data The frequency of data points within a bin The total number of data points The range of the data 23 / 50 The median of {3, 5, 7, 9, 11, 13} is: 7 8 8 10 24 / 50 The arithmetic mean of 5, 7, 9, 11, and 13 is: 7 9 11 13 25 / 50 The median of {6, 8, 10, 12, 14, 16} is: 10 14 11 12 26 / 50 What is a key characteristic of a scatter plot? It shows the relationship between two continuous variables It is used to show the distribution of a single variable It is primarily used for categorical data It cannot show outliers 27 / 50 If the mean of a data set is higher than the median, the distribution is likely: Positively skewed Negatively skewed Symmetrical Bimodal 28 / 50 In a normal distribution, the empirical rule states that approximately what percentage of the data falls within two standard deviations of the mean? 50% 68% 95% 99% 29 / 50 The mean is also known as the: Mode Average Median Range 30 / 50 In a perfectly symmetrical distribution, the median is: Equal to the mean Greater than the mean Less than the mean Equal to the mode 31 / 50 Which of the following is a measure of central tendency? Variance Standard deviation Mean Range 32 / 50 Which type of graphical representation is most useful for showing trends over time? Pie chart Line graph Bar chart Scatter plot 33 / 50 Which of the following is the formula for the geometric mean of n numbers? ∑x/n (∏ᵢ₌₁ⁿ xᵢ)¹⁄ⁿ n∑1/x (∑x²)¹⁄² 34 / 50 What does the area under a curve in a histogram represent? The total frequency of data points The average value of data The range of data The median of data 35 / 50 What type of data is best suited for representation in a box plot? Categorical data Continuous numerical data Nominal data Binary data 36 / 50 Which mean is most affected by extremely high or low values? Arithmetic mean Geometric mean Harmonic mean Median 37 / 50 What is the term for the normal distribution with a mean of 0 and a standard deviation of 1? Standard normal distribution General normal distribution Exponential distribution Uniform distribution 38 / 50 The mean of the data set {12, 15, 18, 21, 24} is: 16 18 20 22 39 / 50 When the data is skewed, the median is preferred over the mean because: The mean is more accurate The median is not affected by extreme values The mean is too complex to calculate The median is always higher 40 / 50 The median of the data set {5, 8, 12, 15, 20} is: 8 12 12 15 41 / 50 Which mode of graphical representation is most suitable for displaying the distribution of a categorical variable? Line graph Bar chart Scatter plot Histogram 42 / 50 To calculate the mean of grouped data, you need to know the: Midpoints and frequencies of the classes Standard deviation Median of the data Mode of the data 43 / 50 In the formula Σfm/Σf, what does m represent? Mean Midpoint of the class interval Mode Median 44 / 50 Which type of graphical representation is most effective for comparing multiple categories with a single measure? Scatter plot Bar chart Line graph Pie chart 45 / 50 Which of the following statements is true about the arithmetic mean? It is sensitive to extreme values (outliers) It is not affected by extreme values It is always greater than the median It is the same as the mode 46 / 50 What is the area under the normal distribution curve between Z-scores of -1 and 1? Approximately 68% Approximately 95% Approximately 99% Approximately 50% 47 / 50 What does the standard deviation of a normal distribution measure? The central location of the data The shape of the distribution The spread or dispersion of the data The skewness of the data 48 / 50 Which graphical representation is typically used to display the distribution of numerical data? Pie chart Bar chart Histogram Line graph 49 / 50 What is the area under the normal distribution curve equal to? 1 0 100% 0.5 50 / 50 If a normal distribution has a mean of 10 and a standard deviation of 2, what is the Z-score for a value of 14? 0.5 -2 2 1 123456789101112131415161718192021222324252627282930 FUNDAMENTAL OF NURSING-II FARKHANDA INSTITUTE OF NURSING AND PUBLIC HEALTH BSN 2ND SEMESTER SUBJECT: FUNDAMENTAL OF NURSING-II QUIZ: 1,2. 1 / 30 When pain lasts only through the expected recovery period, it is described as ________, whether it has a sudden or slow onset, regardless of its intensity. Chronic pain Acute pain Severe pain All of these 2 / 30 The tool that tells us about nature of pain i.e. sharp, dull, throbbing etc. is known as ________. Severity Quality Frequency None of these 3 / 30 In which phase of pain process do the free nerve endings (nociceptors) of C fibers and A-delta fibers of primary afferent neurons respond to noxious stimuli? Transduction of pain Transmission of pain Pain Perception Pain Modulation 4 / 30 __________ is a disorder of excessive daytime sleepiness caused by the lack of the chemical hypocretin in the area of the CNS that regulates sleep. Insomnia Dysomnia Hypersomnia Narcolepsy 5 / 30 The pain that is associated with damaged or malfunctioning nerves due to illness is called; Nociceptive pain Somatic pain Visceral pain Neuropathic pain 6 / 30 The neural mechanisms by which pain is perceived involve a process that has ________ major steps. Two Four Six Eight 7 / 30 The pain is occurring again and again with a short break is called ________. Severe pain Recurring pain Dull pain Noxious pain 8 / 30 The pain that originates in the internal organs and/or hollow viscera is called; Nociceptive pain Somatic pain Visceral pain Neuropathic pain 9 / 30 Stage of sleep which is about 75% to 80% of sleep during a night is ________. NREM sleep REM sleep Stage 3 of NREM None of these 10 / 30 __________ is a biological rhythm that guides the body as to when it should sleep and when it should wake. Sleep Rest Sleep pattern Both A and C 11 / 30 In which phase of the pain process do nociceptors trigger the release of biochemical substances such as prostaglandins, bradykinin, histamine, and substance P, which sensitize nociceptors? Transduction of pain Transmission of pain Pain Perception Pain Modulation 12 / 30 On the basis of COLDERR format, ‘O’ refers to; Ongoing Over the counter Onset Over-secretion 13 / 30 __________ is a condition in which the body is in a decreased state of activity without physical or emotional stress and freedom from anxiety. Sleep Rest Sleep pattern Both A and C 14 / 30 __________ is the stage where the heart rate and respiratory rate drop 20–30% below those exhibited during waking hours. This stage is thought to restore the body physically. NREM stage 3 NREM stage 2 NREM stage 1 NREM stage 4 15 / 30 The nerve fibers that are activated by non-noxious stimuli, such as light touch or pressure, are; A-delta fibers C-unmyelinated fibers A-beta fibers Both A and B 16 / 30 A condition where the affected individual obtains sufficient sleep at night but still cannot stay awake during the day is; Insomnia Dysomnia Hypersomnia Narcolepsy 17 / 30 During this stage, the person feels drowsy and relaxed, the eyes roll from side to side, and the heart and respiratory rates drop slightly. The sleeper can be readily awakened and may deny that he or she was sleeping. NREM stage 3 NREM stage 2 NREM stage 1 None of these 18 / 30 During pain process, the phase in which pain signals travel via A-delta and C-fibers toward the spinal cord and brain is called ________. Transduction of pain Transmission of pain Pain Perception Pain Modulation 19 / 30 __________ is an unpleasant and highly personal experience that may be imperceptible to others. Anger Depression Pain Anxiety 20 / 30 To produce an inhibitory response for nociceptor sensation, interneurons in the substantia gelatinosa in spinal cord are stimulated by the non-noxious large diameter ________ fibers. A-delta fibers C-unmyelinated fibers A-beta fibers Both A and B 21 / 30 On the basis of severity, how many types of pain are there? Two Three Four Five 22 / 30 __________ is thought to involve a defect in the respiratory center of the brain. Obstructive apnea Central apnea Mixed apnea Both A and C 23 / 30 During this stage, the person feels drowsy and relaxed, the eyes roll from side to side, and the heart and respiratory rates drop slightly. The sleeper can be readily awakened and may deny that he or she was sleeping. NREM stage 3 NREM stage 2 NREM stage 1 None of these 24 / 30 In which type of sleep do most dreams occur that can be remembered or consolidated to memory? NREM sleep REM sleep Paradoxical sleep Both B and C 25 / 30 __________ is the complex activity in the CNS due to which a person becomes aware of the intensity, location, and quality of pain. Transduction of pain Transmission of pain Pain Perception Pain Modulation 26 / 30 Stage of sleep which is about 75% to 80% of sleep during a night is ________. NREM sleep REM sleep Stage 3 of NREM None of these 27 / 30 __________ is experienced when an intact nervous system sends signals that tissues are damaged, requiring attention and proper care. Nociceptive pain Somatic pain Visceral pain Neuropathic pain 28 / 30 __________ lasts only about 10 to 15 minutes but constitutes 44% to 55% of total sleep. NREM stage 3 NREM stage 2 NREM stage 1 NREM stage 4 29 / 30 This sleep type usually recurs about every 90 minutes and lasts 5 to 30 minutes, and is known as ________. NREM sleep REM sleep Paradoxical sleep Both B and C 30 / 30 __________ is a partial detachment from the world, where most external stimuli are blocked from the senses. Sleep Rest Sleep pattern Both A and C 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950 Biostatistic Post-RN 2nd semester Quiz no 1. Post-RN 2nd semester Quiz no 1. Nursing with Abdullah Online academy 1 / 50 If a normal distribution has a mean of 10 and a standard deviation of 2, what is the Z-score for a value of 14? 0.5 -2 2 1 2 / 50 The arithmetic mean of the data set {2, 4, 6, 8, 10} is: 4 5 6 7 3 / 50 What does the standard deviation of a normal distribution measure? The central location of the data The shape of the distribution The spread or dispersion of the data The skewness of the data 4 / 50 When the data is skewed, the median is preferred over the mean because: The mean is more accurate The median is not affected by extreme values The mean is too complex to calculate The median is always higher 5 / 50 What is a key characteristic of a scatter plot? It shows the relationship between two continuous variables It is used to show the distribution of a single variable It is primarily used for categorical data It cannot show outliers 6 / 50 The median is less affected by: Outliers and extreme values The size of the data set The order of the data The range of the data 7 / 50 In a normal distribution, the empirical rule states that approximately what percentage of the data falls within two standard deviations of the mean? 50% 68% 95% 99% 8 / 50 In a normal distribution, what percentage of the data falls within one standard deviation of the mean? 50% Approximately 68% Approximately 75% Approximately 95% 9 / 50 If the mean of a data set is higher than the median, the distribution is likely: Positively skewed Negatively skewed Symmetrical Bimodal 10 / 50 The arithmetic mean of 5, 7, 9, 11, and 13 is: 7 9 11 13 11 / 50 The mean of the data set {12, 15, 18, 21, 24} is: 16 18 20 22 12 / 50 In a perfectly symmetrical distribution, the median is: Equal to the mean Greater than the mean Less than the mean Equal to the mode 13 / 50 The median is a measure of: Central tendency Dispersion Correlation Skewness 14 / 50 The median is defined as the: Middle value in a data set when arranged in ascending or descending order Sum of all values divided by the number of values Most frequently occurring value in a data set Difference between the highest and lowest values 15 / 50 Which type of graphical representation is most effective for comparing multiple categories with a single measure? Scatter plot Bar chart Line graph Pie chart 16 / 50 Which graphical representation is typically used to display the distribution of numerical data? Pie chart Bar chart Histogram Line graph 17 / 50 The median is particularly useful when: Data is normally distributed Data is skewed or contains outliers Data has no mode The sample size is very large 18 / 50 A pie chart is most effective for displaying: Proportions of a whole Trends over time Relationships between variables Frequency distributions 19 / 50 What is the mean of the following ungrouped data set: 15, 20, 25, 30, 35? 25 20 30 35 20 / 50 Which type of graphical representation is most useful for showing trends over time? Pie chart Line graph Bar chart Scatter plot 21 / 50 In a frequency distribution table, the symbol (f) stands for: Frequency Midpoint Mean Class interval 22 / 50 If the data set has an even number of observations, the median is found by: Choosing the first value Averaging the two middle values Selecting the last value Choosing the highest value 23 / 50 What is the area under the normal distribution curve between Z-scores of -1 and 1? Approximately 68% Approximately 95% Approximately 99% Approximately 50% 24 / 50 Which mean is most affected by extremely high or low values? Arithmetic mean Geometric mean Harmonic mean Median 25 / 50 The geometric mean is most appropriate for data that is: Normally distributed Positively skewed Nominal Ordinal 26 / 50 What is the term for the normal distribution with a mean of 0 and a standard deviation of 1? Standard normal distribution General normal distribution Exponential distribution Uniform distribution 27 / 50 To calculate the mean of grouped data, you need to know the: Midpoints and frequencies of the classes Standard deviation Median of the data Mode of the data 28 / 50 In a histogram, what do the heights of the bars represent? The median of the data The frequency of data points within a bin The total number of data points The range of the data 29 / 50 What is the area under the normal distribution curve equal to? 1 0 100% 0.5 30 / 50 The median of {6, 8, 10, 12, 14, 16} is: 10 14 11 12 31 / 50 The mean is calculated by: Dividing the number of data points by the sum of all values Dividing the sum of all values by the number of data points Subtracting the smallest value from the largest value Multiplying the sum of all values by the number of data points 32 / 50 When the data distribution is negatively skewed, the median: Is closer to the higher end of the data set Is closer to the lower end of the data set Lies exactly at the center of the data set Is always lower than the mean 33 / 50 In the formula Σfm/Σf, what does m represent? Mean Midpoint of the class interval Mode Median 34 / 50 Which of the following statements is true about the arithmetic mean? It is sensitive to extreme values (outliers) It is not affected by extreme values It is always greater than the median It is the same as the mode 35 / 50 When the data distribution is positively skewed, the median: Is closer to the lower end of the data set Is closer to the higher end of the data set Lies exactly at the center of the data set Is always higher than the mean 36 / 50 The median of {3, 5, 7, 9, 11, 13} is: 7 8 8 10 37 / 50 The mean is also known as the: Mode Average Median Range 38 / 50 The mean and median of a normal distribution are: Equal Different Not related Always zero 39 / 50 The total area under the normal distribution curve to the left of a Z-score of -1 is: 0.8413 0.1587 0.5 0.6826 40 / 50 What is the shape of a normal distribution curve? Skewed to the right Skewed to the left Bell-shaped Symmetrical and bell-shaped 41 / 50 What does the area under a curve in a histogram represent? The total frequency of data points The average value of data The range of data The median of data 42 / 50 The median of the data set {5, 8, 12, 15, 20} is: 8 12 12 15 43 / 50 In a frequency distribution, if the midpoints are 15, 25, 35, 45, and the frequencies are 2, 4, 6, 8 respectively, the mean is: 30 35 40 45 44 / 50 Which of the following is a measure of central tendency? Variance Standard deviation Mean Range 45 / 50 Which mode of graphical representation is most suitable for displaying the distribution of a categorical variable? Line graph Bar chart Scatter plot Histogram 46 / 50 What type of data is best suited for representation in a box plot? Categorical data Continuous numerical data Nominal data Binary data 47 / 50 Which of the following is the formula for the geometric mean of n numbers? ∑x/n (∏ᵢ₌₁ⁿ xᵢ)¹⁄ⁿ n∑1/x (∑x²)¹⁄² 48 / 50 Which of the following is not a mode of graphical representation? Pie chart Data matrix Histogram Line graph 49 / 50 Which of the following is true about the median? It is influenced by extreme values It divides the data set into two equal parts It is the same as the mode It can only be used for nominal data 50 / 50 If the sum of 10 values is 150, what is the mean of the data? 10 15 20 25
