Estimate the number of chillies in this picture:
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Topics: Starter  Estimating
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Previous Day  This starter is for 7 February  Next Day
Here is a video that shows how statisticians use density samples to estimate their statistics.
Teacher, do your students have
access to computers? 

Here a concise URL for a version of this page without the comments.
Transum.org/go/?Start=February7
Students could collect everyone's estimates on a spreadsheet.
Use this data to calculate the median estimate. The student whose estimate is closest to the median wins a chilli.
Here is the URL which will take them to a different type of estimating activity.