Joelle's Histogram Data Analysis

Joelle is creating a histogram with 25 data points ranging from 20 to 120. The video explains how to determine the number of intervals for the histogram by dividing the range into five equal parts, each with a width of 20. This ensures that each interval contains approximately five data points, making the histogram evenly spaced and easy to interpret.

What is the range of data points Joelle is working with?

• 10 to 100

• 20 to 120

• 30 to 130

• 40 to 140

How many data points does Joelle have for creating the histogram?

• 15

• 30

• 20

• 25

What is the suggested number of intervals for Joelle's histogram?

• 4

• 3

• 5

• 6

What is the width of each interval in Joelle's histogram?

• 20

• 10

• 25

• 15

Which of the following is NOT one of the intervals used in Joelle's histogram?

• 80

• 50

• 20

• 100

How many data points are expected per interval in Joelle's histogram?

• About 3

• About 5

• About 7

• About 9

Why is it a good idea to use five intervals for Joelle's histogram?

• Because it allows for more detailed data analysis

• Because it makes the histogram look symmetrical

• Because it evenly distributes the data points

• Because it simplifies the calculation process