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Question 1

What is the mean of a set of numbers?

Answer 1

The mean is the average of a set of numbers, calculated by dividing the sum of the numbers by the count of the numbers.

Question 2

How do you calculate the median?

Answer 2

To calculate the median, arrange the numbers in ascending order and find the middle value. If there is an even number of values, the median is the average of the two middle numbers.

Question 3

What is the mode of a set of numbers?

Answer 3

The mode is the number that appears most frequently in a set of numbers.

Question 4

True or False: The mode can be more than one number.

Answer 4

True

Question 5

What is the range of a set of numbers?

Answer 5

The range is the difference between the highest and lowest values in a set of numbers.

Question 6

What is the formula for calculating the mean?

Answer 6

Mean = (Sum of all values) / (Number of values)

Question 7

Fill in the blank: The median is the _____ value in a sorted list of numbers.

Answer 7

middle

Question 8

Which measure of central tendency is most affected by outliers?

Answer 8

The mean

Question 9

If a data set has the numbers 2, 3, 4, 4, 5, what is the mode?

Answer 9

4

Question 10

What happens to the median if you add a new number that is larger than the current maximum?

Answer 10

The median may change depending on the total count of numbers, but it will not be less than the previous median.

Question 11

True or False: The mean and median can be the same for a data set.

Answer 11

True

Question 12

Calculate the range of the numbers 10, 15, 20, 25.

Answer 12

15

Question 13

What is the median of the following set of numbers: 3, 1, 2?

Answer 13

2

Question 14

If the data set is 5, 5, 5, 10, what is the mode?

Answer 14

5

Question 15

Fill in the blank: The range is calculated as _____ - _____ .

Answer 15

Maximum value - Minimum value

Question 16

What measure would be best to use if you want to determine the typical value of a skewed distribution?

Answer 16

The median

Question 17

True or False: A data set can have no mode.

Answer 17

True

Question 18

What is the mean of the following numbers: 4, 8, 6?

Answer 18

6

Question 19

If the numbers are 12, 15, 12, 18, what is the mode?

Answer 19

12

Question 20

How is the mean affected when an outlier is present?

Answer 20

The mean can be significantly higher or lower than the typical values.

Question 21

Calculate the median of the following list: 7, 9, 5, 6.

Answer 21

6.5

Question 22

What is the range of the numbers -5, 0, 5, 10?

Answer 22

15

Question 23

What is the median of the data set: 1, 3, 3, 6, 7, 8, 9?

Answer 23

6

Question 24

Which measure of central tendency is least affected by extreme values?

Answer 24

The median

Question 25

Fill in the blank: The mean is also known as the _____ average.

Answer 25

arithmetic

Question 26

If a data set has the values 10, 20, 30, 40, what is the mean?

Answer 26

25