Understanding Mean and Median

The video tutorial from MooMooMath explains how to calculate the mean and median of a data set. It provides step-by-step examples, starting with the calculation of the mean by adding all numbers and dividing by the count. The tutorial then demonstrates finding the median by arranging numbers in order and identifying the middle value. Three examples are worked through to illustrate these concepts, with a focus on clear and simple explanations. The video concludes with a summary and encouragement to continue learning with MooMooMath.

What is the first step in finding the mean of a data set?

• Multiply all numbers together

• Add all numbers in the data set

• Subtract the smallest number from the largest

• Divide the largest number by the smallest

If you have a data set of 6 numbers, what do you divide the sum by to find the mean?

• 7

• 6

• 3

• 5

How do you arrange numbers to find the median?

• From greatest to least

• In any order

• From least to greatest

• In pairs

What do you do after arranging numbers from least to greatest to find the median?

• Multiply the middle numbers

• Cross off the lowest and highest numbers

• Divide the largest number by the smallest

• Add all numbers together

In a data set with an even number of values, how is the median determined?

• By taking the mean of the two middle numbers

• By adding all numbers and dividing by two

• By selecting the largest number

• By selecting the smallest number

What is the mean of the numbers 50, 65, 174, 65, 50, and 40?

• 74

• 70

• 85

• 80

What is the median of the numbers 40, 50, 50, 65, 65, and 174?

• 65

• 50

• 57.5

• 174

In the final example, what is the mean of the numbers 95, 80, 75, 87, and 28?

• 70

• 75

• 80

• 73

What is the median of the numbers 28, 75, 80, 87, and 95?

• 87

• 80

• 95

• 75