MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow compar…
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Question
|19. An advantage of the interquartile range (IQR) over the range (R) is that it | a. can be used for nominal level variables. b. includes the most extreme scores |c. is based on only the middle 50% of the scores |d. ignores the first and third quartiles 20. The distance between a score and the mean is called a. the deviation score b. the difference score c. the range d. the summation
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Transcribed Image Text:|19. An advantage of the interquartile range (IQR) over the range (R) is that it | a. can be used for nominal level variables. b. includes the most extreme scores |c. is based on only the middle 50% of the scores |d. ignores the first and third quartiles 20. The distance between a score and the mean is called a. the deviation score b. the difference score c. the range d. the summation
21. Since computation of the standard deviation requires addition, division, and other mathematical operations, it should only be used for a. interval-ratio level variables b. non-continuous variables at any level of measurement c. nominal level variables |d. discrete variables only 22. As a distribution of scores becomes more variable, the value of the standard deviation a. decreases b. stays the same c. increases | d. becomes unpredictable 23. If male and female college students have the same mean GPA but the standard deviation for females is much larger, you may conclude that a. males are smarter than females b. modal GPAS for both groups would be the same c. median GPAS for both groups would be the same | d. there is more variability among female students with respect to GPA 24. The sampling distribution is the theoretical distribution of all possible sample statistics, like a mean, that can be drawn from a population. a. true b. false 25. The mean of a population is referred to in statistical terms as a. gamma (G) b. mu (u) c. rho (p) |d. pi (x) 26. The standard deviation of a population is referred to in statistical terms as a. phi (0) b. chi (x) c. sigma (6) d. beta (B)
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Transcribed Image Text:21. Since computation of the standard deviation requires addition, division, and other mathematical operations, it should only be used for a. interval-ratio level variables b. non-continuous variables at any level of measurement c. nominal level variables |d. discrete variables only 22. As a distribution of scores becomes more variable, the value of the standard deviation a. decreases b. stays the same c. increases | d. becomes unpredictable 23. If male and female college students have the same mean GPA but the standard deviation for females is much larger, you may conclude that a. males are smarter than females b. modal GPAS for both groups would be the same c. median GPAS for both groups would be the same | d. there is more variability among female students with respect to GPA 24. The sampling distribution is the theoretical distribution of all possible sample statistics, like a mean, that can be drawn from a population. a. true b. false 25. The mean of a population is referred to in statistical terms as a. gamma (G) b. mu (u) c. rho (p) |d. pi (x) 26. The standard deviation of a population is referred to in statistical terms as a. phi (0) b. chi (x) c. sigma (6) d. beta (B)
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