MA1 Quiz

Question 1

Variation describes the degree of dispersion- true or false

Answer 1

True

Question 2

A student is studying political party’s and asks other students to answer whether they are a republican or Democrat. This is flawed because…

Answer 2

The categories are not exhaustive

Question 3

What is the median of 26, 30, 24, 32, 32, 31, 27, 29?

Answer 3

29.5

Question 4

What must be the least scale of measurement for the median?

Answer 4

Ordinal

Question 5

100 employees monthly salaries were rounded to the nearest 10 dollars. They range from 1040 to 1720. If we want to arrange the data into 7 classes what is the best amount for the length?

Answer 5

100

Question 6

This disadvantage of the arithmetic mean is that

Answer 6

It can be swayed by outliers

Question 7

What is the median mean and mode relationship in a symmetric distribution?

Answer 7

They are equal

Question 8

Which is true in regards to analyzing nominal qualitative data

1. Class midpoint must be calculated
2. Upper and lower classes must be calculated
3. The number of classes corresponds to the number of variable values
4. The 2k rule can be applied

Answer 8

3.

Question 9

Height and weight are examples of what levels of measurement?

Answer 9

Ratio

Question 10

True or false- the number of children in a family is a discrete variable

Answer 10

True

Question 11

As a general rule, what range should the amount of classes be when making a frequency distribution?

Answer 11

5-15