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Question 31 (2 points) Aset of scores is presented in a histogram. The histogram shows a series of bars that tend to decrease in height

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Question 31 (2 points) Aset of scores is presented in a histogram. The histogram shows a series of bars that tend to decrease in height from left to right. What is the shape of the distribution? 0 A. Leptokurtic O B. Positively skewed O C. Negativity skewed O D. Normal Question 32 {2 points) Find the sum of the deviation of the variable values 3, 4, 6, 8, 14 from their mean Question 33 (2 points) The specific statistical methods that can be used to summarize or to describe a collection of data is called: 0 A. Descriptive statistics 0 B. Inferential statistics 0 C. Analytical statistics 0 D. All of the above Question 34 {2 points) Which statistical test is used to identify whether there is a relationship between two categorical variables? Main Content 0 A. Student's t-test. .. O B. Spearman's correlation test. 0 C. Pearson's Chi-square test. 0 D. Mann-Whitney test. Question 35 {2 points) The degree of randomness of selection would depend upon the process of selecting the items from the O A. Population Question 36 {2 points) Astudent obtained the mean and the standard deviation of 100 observations as 40 and 5.1. It was later found that one observation was wrongly copied as 50, the correct figure being 40. Find the correct mean and the SD. 0 A. Mean = 38.8, so =5 0 B. Mean = 39.9, so =5 0 c. Mean = 39.9, so = 4 O D. None Question 37 {2 points) The seminar rooms in the library are identified by the letters Ato H. A researcher records the number of classes held in each room during the first semester. What kind of graph would be appropriate to present the frequency distributions of these data? 0 A. Histogram O B. Scatterplot O C. Bar chart 0 D. Box plot Question 38 {2 points) A _________________ sample is formed by selecting one unit at random and then selecting additional units at evenly spaced intervals until the sample has been formed. 0 A. Stratied O B. Systematic O C. Judgement O D. Random Question 39 (2 points) The first step in tabulation is: O A. Foot note 0 B. Source note 0 C. Captions O D. Classification Question 40 (2 points) In the statistical table column headings are called: 0 A. Stubs O B. Captions O C. Source note 0 D. None of these

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