Measures of Center and Median

The video tutorial explains how to find the median, mean, and mode of a data set. It begins by ordering the data from least to greatest to find the median, which is the middle number. If there are two middle numbers, the median is the average of those two. The mean is calculated by adding all numbers and dividing by the count of numbers. The mode is the number that appears most frequently in the data set. The tutorial provides a clear step-by-step guide to understanding these measures of center.

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

• Organize the numbers from least to greatest

• Add all the numbers together

• Divide the sum by the number of data points

• Find the number that appears most often

Which number is the smallest in the given data set?

• 68

• 70

• 62

• 76

What is the last number in the ordered data set?

• 70

• 68

• 72

• 76

How do you find the median when there are two middle numbers?

• Add them together

• Find the average of the two numbers

• Choose the smaller number

• Choose the larger number

What is the median of the data set provided?

• 73

• 70

• 71

• 72

If a data set has an odd number of points, how is the median found?

• By identifying the most frequent number

• By adding all numbers and dividing by the count

• By choosing the middle number

• By averaging the two middle numbers

What is the mean of the data set?

• 73

• 72

• 71

• 70

How is the mean calculated?

• By finding the middle number

• By adding all numbers and dividing by the count

• By identifying the most frequent number

• By subtracting the smallest number from the largest

What is the sum of the numbers in the data set?

• 440

• 420

• 430

• 450

Which number appears most frequently in the data set?

• 62

• 68

• 70

• 72