Resources
Measures of Centre and Spread: a Small Sample
This activity highlights the difficulty finding quartiles for small samples sizes as there appears to be more than one method to be found dependent upon the book being used. In this activity a sample size of 11 is chosen as finding the quartiles for this sample size is straightforward. Students are told the number...
Measures of Centre and Spread: Cricketing MMM
In this activity, students are required to find the mean, median and mode from a data set, from a frequency table, from a grouped frequency table containing continuous data and from a grouped frequency table containing discrete data.
This resource is part of the Making Stats Vital collection from Jonny...
Measures of Centre and Spread: Do We Divide by n or n-1?
This activity is designed to enable students to gain a deeper understanding of the topic of variance and the difference between finding the population variance and the sample variance. Students might expect that the sum of the deviations would be divided by n when finding the sample variance instead of (n-1). The...
Measures of Centre and Spread: Measures of Spread
In this activity, students are introduced to the bee academy. A small set of data is provided and members of the bee academy explain how to find the range, the interquartile range, the mean deviation from the mean, the mean squared deviation from the mean, the sample variance and the standard deviation.
This...
Measures of Centre and Spread: Spot the Error
In this activity students are presented with a calculation of the standard deviation of seven athletes. Students are asked to comment upon the result. It is intended that students will spot that the standard deviation is too large given the data, but can students spot the error? This resource highlights the errors...
One of a series designed to introduce basic mathematical concepts to young children. Each concept is covered by a double-page spread which shows it being used in everyday life and aims to reinforce the child's...
Measuring boat speed
This activity considers displaying data from a practical investigation looking at the effect of streamlining a boat's hull. It gives students the opportunity to consider how this information can be represented effectively and use this to form conclusions. The...
Measuring Carbon Cycling
A Catalyst article looking at how to measure parts of carbon cycling as it happens in forests. Two of the processes used, flux towers and soil chambers, are described.
This article is from Catalyst: GCSE Science Review 2007, Volume 17, Issue 4.
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