Understanding Range in Data Sets

In this video, Mr. J explains how to find the range of a data set, which is the difference between the highest and lowest values. He provides two examples, demonstrating the process of ordering the data and calculating the range. The video concludes with a summary of the steps involved in finding the range.

What is the range of a data set?

• The difference between the highest and lowest numbers

• The product of the highest and lowest numbers

• The sum of all numbers in the set

• The average of all numbers in the set

Why is it important to organize a data set from least to greatest before calculating the range?

• It helps in calculating the average

• It helps in identifying the median

• It makes it easier to find the highest and lowest values

• It allows for easier addition of numbers

In the first example, what is the lowest value in the data set?

• 3

• 2

• 10

• 5

What is the range of the first data set?

• 8

• 12

• 10

• 5

What is the purpose of crossing off numbers as you organize a data set?

• To ensure no numbers are missed or counted twice

• To make the data set look neat

• To calculate the sum easily

• To find the median quickly

What is the first step in organizing the second data set?

• Calculating the sum

• Arranging numbers from least to greatest

• Identifying the highest value

• Finding the average

In the second example, what is the highest value in the data set?

• 96

• 92

• 90

• 85

What is the range of the second data set?

• 27

• 23

• 31

• 19

How do you calculate the range of a data set?

• Add all numbers together

• Subtract the lowest value from the highest value

• Multiply the highest and lowest values

• Divide the highest value by the lowest value

What is the final step in finding the range of a data set?

• Dividing the sum by the number of values

• Subtracting the lowest value from the highest value

• Finding the median

• Adding all numbers