NZ Level 7 (NZC) Level 2 (NCEA)
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Sources of Bias

Interactive practice questions

"Do you want a soup for lunch or a sandwich?"

Is the question biased or fair?

Biased

A

Fair

B

Biased

A

Fair

B
Easy
Less than a minute
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"What do you do on a Sunday morning?"

"Do you like these shoes?"

"Do you prefer this shirt or the one on the shelves at the moment?"

Outcomes

S7-1

Carry out investigations of phenomena, using the statistical enquiry cycle: A conducting surveys that require random sampling techniques, conducting experiments, and using existing data sets B evaluating the choice of measures for variables and the sampling and data collection methods used C using relevant contextual knowledge, exploratory data analysis, and statistical inference.

S7-3

S7-3 Evaluate statistically based reports: A interpreting risk and relative risk B identifying sampling and possible non-sampling errors in surveys, including polls

91265

Conduct an experiment to investigate a situation using statistical methods

91266

Evaluate a statistically based report

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