Statistics Concepts Summary
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Statistics Concepts Summary
Statistics at a glance
Mean: add the values and divide by how many values there are. Median: put the values in order and find the middle; with an even number of values, average the two middle values. Mode: the value or values that occur most often. Range: largest value minus smallest value.
Work out the measures
For each data set, calculate the mean, median, mode and range. If there is no mode, write “no mode”.
- Mean
- Median
- Mode
- Range
Read the class survey
The table shows how many books four students read during the holidays.
Student
Books read
Aria
2
Sienna
5
Isla
3
Luca
6
Choose and explain
Use the four measures to describe data and decide which measure best fits a situation.
- Finding the most common shoe size
- Finding a typical result when a few test scores are unusually low
- Describing the spread of a set of values
- Finding the average amount collected by a fundraiser
- Range
- Mean
- Median
- Mode
3 printable pages
Page 1
Page 2
Page 3
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