Download presentation

Presentation is loading. Please wait.

Published byRene Lansdown Modified over 2 years ago

2
Means from Frequency Tables A Learning Object produced by Sidney Tyrrell, Coventry University, as part of her National Teaching Fellowship project.

4
To find the mean number of letters you receive per day You might keep a record for 10 days of the number of letters you receive each day, and summarise the results in a table.

5
like this Number of letters per dayfrequency 5 2 3 3 4 2

6
To find the mean it is important to remember you want the average number of letters per day. So need the total number of letters, and total number of days.

7
The total number of letters is given by Number of letters per day frequencyLetters x frequency 25 32 43 2 x 5 = 10 3 x 2 = 6 4 x 3 = 12 Total letters = 28

8
and the total number of days is Number of letters per day frequencyLetters x frequency 25 32 43 2 x 5 = 10 3 x 2 = 6 4 x 3 = 12 Total letters = 28days = 10

9
days = 10 letters = 28 The mean is Total letters Total days = 28 10 =2 8 The mean is 2 8 letters per day

Similar presentations

Presentation is loading. Please wait....

OK

Practice Solutions.

Practice Solutions.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on computer hardware components Ppt on brushless servo motor Ppt on fdi in retail sector Ppt on bluetooth communication module Ppt on law against child marriage in india Ppt on art and craft movements Ppt on online job portal project Ppt on bond length and strength Ppt on linear equations in two variables photos Ppt on area of trapezium example