Calculating the Mean of a Data Set

The video tutorial explains how to calculate the mean of a data set, specifically test scores. It begins by defining the mean as the average, then demonstrates how to sum the test scores and divide by the number of scores to find the mean. The tutorial concludes by interpreting the mean as a grade, illustrating its practical application.

What is the mean of a data set equivalent to?

• The average of the data

• The median of the data

• The mode of the data

• The range of the data

How many test scores were used to calculate the mean?

• 3

• 4

• 5

• 6

What is the first step in calculating the mean of test scores?

• Divide the sum by the number of scores

• Multiply the highest and lowest scores

• Add all the test scores together

• Find the difference between the highest and lowest scores

What was the sum of the test scores?

• 410

• 400

• 420

• 430

How is the mean calculated after finding the sum of the scores?

• By subtracting 5 from the sum

• By adding 5 to the sum

• By dividing the sum by 5

• By multiplying the sum by 5

What is the final calculated mean of the test scores?

• 82

• 83

• 84

• 85

What grade corresponds to the average test score of 84?

• D

• B

• C

• A