Answer to Question #180524 in Statistics and Probability for ali

Question

Q2.a. Suppose a large number of people take a test, and every single student gets exactly half of the answers

right. In this case, find out the standard deviation?

b. Image that 11 people take a 10 question test. Suppose one student gets 10 correct answers, one gets 9

correct, one gets 8 correct, and so on, all the way down to one student getting none correct. What is

the median score, accurate to three decimal places?

c. Draw an appropriate graphs for the given data set, grouped as: even and odd.

-5, 4, 1, -4, 0, 3, 2, -2, 5, -3,-1,-2.

d. Find out the appropriate measures of location for the given data set:

Classes 7.5- 12.5 12.5-17.5 17.5-22.5 22.5-27.5 27.5-

Frequency 3 15 19 3 15

e. The coefficient of skewness of a series A is 0.15 and that of series B is 0.062. Which of the two series

is less skewed?

Answer 1

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