A video explaining how to calculate and interpret the variance and standard deviation. This video is suitable for both AS Level Maths and A-Level Maths.
Exam Question Booklet:📝
🔗 https://www.1stclassmaths.com/_files/ugd/9f3fb0_9b866973fa8948718d1267134be73f90.pdf
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0:00 Intro
0:10 What are the variance and standard deviation?
6:45 Practice Calculation
8:37 Alternative Formula
10:48 Using a calculator
12:42 Calculation from a frequency table
18:06 Calculation from a grouped frequency table
19:19 Examples from summary statistics
24:09 Comparing datasets
26:50 Effect of adding or removing values
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