Unit 8, Lesson 5
Normal Distributions
Algebra 2
Practice
Problem 1
Here is a histogram of a distribution with 94 data points.
Histogram. The vertical axis is labeled from 0 to 12 by 2’s. The horizontal axis has bin widths of 1, starting at 46. Beginning at 46 up to, but not including 47, height of bar at each interval is 2, 3, 4, 3, 6, 8, 9, 12, 11, 8, 6, 8, 7, 4, 2, 1, 0.
- 47 to 48
- 50 to 51
- 53 to 54
Problem 2
This relative frequency histogram shows the distribution of daily average temperatures (in degrees Fahrenheit) for a town over the course of 5 years.
Histogram from 60 to 78 by 1’s. Average daily temperature in degrees Fahrenheit. Beginning at 60 up to but not including 61, height of bar at each interval is point 0 0 1, point 0 0 7, point 0 1 3, point 0 2, point 0 5 2, point 0 7, point 0 8 7, point 1 2, point 1 5 9, point 1 3 2, point 1, point 0 9 8, point 0 7, point 0 3 2, point 0 2 3, point 0 1, point 0 0 4, point 0 0 2, 0.
Match each temperature interval with the proportion of days over the 5 years whose average temperature fell in that interval.