We learned that there are 4 items by which we characterize a distribution in statistics. Which of the followings is NOT one of them?O a. Central tendencyOb. HomogeneityO c. SkewnessOd. Kurtosis

Given : Four terms : a. Central tendency b. Homogeneity c. Skewness d. Kurtosis

Answered: We learned that there are 4 items by…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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University students who drink alcohol, usually consume about 6 drinks per week. Given that about 60% of students drink alcohol, what would you predict to be the shape of the distribution of the number of cups drunk for university students (which include those who drink alcohol and those who don't)? Select one: O a. negatively skewed with scores bunched at 6 drinks per week b. normal distribution with one peak at 6 drinks a week leptokurtic with scores bunching around 6 drinks a week O d. positively skewed with scores bunched at 3 drinks a week. O e. bimodal distribution with one peak at zero and another peak at about 6 drinks per week O C.
Just d
Which of the following statements regarding Z scores is FALSE? a. It indicates whether the raw score is above or below average. b. It indicates whether or not a distribution is skewed. c. It indicates the percentage of cases between that score and the mean d. It is sometimes referred to as a standard score
3. Calculate the mean, median, mode, variance, and standard deviation for each of the following two groups of scores, which represent student performance on a health science test, with the highest possible score being 50. Group A 35 49 33 44 45 21 28 411 Group B 20 25 50 44 16 29 37 21 40 39 23 26 a. Which group has the greatest variability in scores? b. Which group has the highest mean score? c. How would you describe each group when comparing it to the other?
3) What graphs can help us identify a normal distribution? a. Dotplot b. Histogram c. Boxplot d. Normal probability plot pick one a, b, c, d b, c a, b a, b, c b, d
Q2. A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 20 hours (each entry in the table is the number of sales per hour) 5 4 2 6 7 8 5 4 6 4 4 5 4 5 4 7 8 What are the mean, median, mode, variance and standard deviation of the sales?
29. In analysis of variance, an MS value is a measure of a. Variance b. the overall mean for the set of N scores c. the total variability for the set of N scores d. average differences among means
18

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We learned that there are 4 items by which we characterize a distribution in statistics. Which of the followings is NOT one of them? a. Central tendency b. Homogeneity O c. Skewness O d. Kurtosis