Understanding Mean from a Frequency Table

In this video, Mr. J explains how to find the mean from a frequency table. The process involves summing all values and dividing by the total number of values. An example using bike ride distances is provided, demonstrating how to use the frequency table to simplify calculations. The video also covers rounding the mean to different decimal places for precision. The tutorial concludes with a summary of the steps involved in finding the mean.

What is the first step in finding the mean from a frequency table?

• Divide the sum by the number of values

• Multiply all values by their frequencies

• Add all values together

• Subtract the smallest value from the largest

In the example, how many times did the distance of 7 miles occur?

• Four times

• Two times

• Eight times

• Six times

What is the sum of the distances for 8 miles in the example?

• 40

• 35

• 30

• 45

How do you determine the total number of values in the frequency table?

• Add all the frequencies together

• Divide the sum of frequencies by the number of categories

• Subtract the smallest frequency from the largest

• Multiply all the frequencies

What is the total number of values in the example frequency table?

• 22

• 19

• 20

• 21

What is the mean of the distances in the example?

• 7.5

• 8.0

• 8.5

• 9.0

How is the mean rounded to the nearest tenth?

• By looking at the thousandths place

• By looking at the hundredths place

• By looking at the tenths place

• By looking at the units place

What is the mean rounded to the nearest hundredth?

• 8.49

• 8.50

• 8.48

• 8.47

Why is it important to use a frequency table for calculating the mean?

• It helps in finding the median

• It simplifies the addition of repeated values

• It is required for all statistical calculations

• It makes the data look more organized

What is the final step in finding the mean from a frequency table?

• Subtract the smallest value from the largest

• Multiply the sum by the number of values

• Divide the sum by the total number of values

• Add the frequencies together