Foundation
30th June 2025
- 1The Statistical Enquiry Cycle
A supermarket wants to know if a new till layout reduces queuing time. Write a suitable statistical question for the start of the enquiry cycle.
- 2Averages from a Frequency Table
Using the same table (0:4, 1:10, 2:4, 3:2), find the range.
- 3Types of Data
Is 'number of pets owned' discrete or continuous data?
- 4Estimated Mean from Grouped Data
The table shows weights, in kg, of 20 parcels: 0-5 (freq 4), 5-10 (freq 10), 10-15 (freq 6). Estimate the mean weight.
- 5Sampling Methods
A school of 600 students wants a sample of 30. A teacher decides to only survey students in her own class of 30. State one problem with this method.
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