Chapter 8

Question 1

The frequency distribution of the following dataset resembles a normal distribution or bell curve.

2, 5, 7, 7, 11, 12, 14, 15, 17, 20
-true or false

Answer 1

false

Question 2

The frequency distribution of the following dataset:

180, 176, 154, 185, 169, 185, 166, 173, 129, 168

Answer 2

negatively skewed

Question 3

The lower quartile of the following dataset is

13, 18, 6, 20, 25, 11, 9, 18, 3, 30, 16, 9, 8, 23, 26, 17

Answer 3

9

Question 4

In statistical terms, median is equal to upper quartile of a dataset.
-true or false

Answer 4

false

Question 5

In statistics, quartiles allow us to divide a dataset into 5 groups.
-true or false

Answer 5

false

Question 6

Which of the following functions is best suited to add numbers based on one condition?

Answer 6

SUMIF

Question 7

Which of the following functions is best suited to count numbers based on multiple conditions?

Answer 7

COUNTIFS

Question 8

In statistics, correlation between two variables indicates causation.
-true or false

Answer 8

false

Question 9

In statistical terms, mean, median, mode are examples of inferential statistics.
-true or false

Answer 9

false

Question 10

The advantage of correlation coefficient(r) over covariance is that it demonstrates the strength of a relationship.
-true or false

Answer 10

true