Probability and Statistics for Engineers_2

Question 1

a) Organizing data b) Summarizing data c) Interpreting data are the parts of statistical analysis

Accepted Answer

True

Question 2

Find the range of the data set {4, 9, 15, 22, 30}.

Accepted Answer

26

Question 3

Given the data set {10, 12, 14, 16, 18}, what is the variance?

Accepted Answer

5

Question 4

Find the standard deviation of the data set {5, 10, 15, 20, 25}.

Accepted Answer

7.07

Question 5

Find the median of the data set {10, 20, 30, 40, 50, 60, 70, 80}.

Accepted Answer

45

Question 6

For the data set {8, 12, 15, 20, 25, 30, 35}, what is the third quartile (Q3)?

Accepted Answer

30

Question 7

Find the mode of the data set {5, 8, 12, 12, 14, 18, 20, 12}.

Accepted Answer

12

Question 8

For the data set {3, 7, 7, 7, 10, 12, 15}, what is the mode?

Accepted Answer

7

Question 9

Find the mean of the data set {5, 10, 15, 20, 25}.

Accepted Answer

15

Question 10

Which measure describes the spread of the middle 50% of the data?

Accepted Answer

Interquartile range

Questions 10