AI generatedStatisticsKS3 / GCSE

Finding the mean from a list

Finding the mean from a list.

  • Mean = total of values ÷ number of values.
  • Mean × count recovers a total. Combine totals before dividing by a combined count.
  • Keep exact values until the final rounding step.

Example 1

Find the mean to 2 d...

TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.

Example 2

Find the mean to 2 d...

TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.

Your turn

Question 1

Find the mean to 2 d...

Check answer
TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.
Question 2

Find the mean to 2 d...

Check answer
TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.
Question 3

Find the mean to 2 d...

Check answer
TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.
Question 4

Find the mean to 2 d...

Check answer
TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.
Question 5

Find the mean to 2 d...

Check answer
TotalAdd every observation.
MeanDivide by the number of observations. Round only at the end.
MeanRound only this final value.
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