Achievement objective S7-3
In a range of meaningful contexts, students will be engaged in thinking mathematically and statistically. They will solve problems and model situations that require them to:
- Evaluate statistically based reports:
- A. interpreting risk and relative risk
- B. identifying sampling and possible non-sampling errors in surveys, including polls.
Note: this content is new to the statistics curriculum.
A. Interpreting risk and relative risk:
- Calculates and interprets
risk, selects baseline group, and calculates and interprets
relative risk and writes a news clip reporting on findings.
- In a media article with text and/or a table, identifies absolute risk, baseline group and
relative risk, and for
relative risk, identifies the two groups being compared; identifies relevant missing information and justifies why it is important to include this information; identifies whether risk applies personally and why.
B. Identifying sampling and possible non-sampling errors in surveys, including polls:
- In a media report on a survey or a poll, identifies
sampling error and explains the connection among sample, population,
sampling variability, and
- In a media report on a survey or a poll, identifies and evaluates, using critical questions (look under the heading critical questions in the work doc below), sampling methods and possible
non-sampling errors such as self-selection, non response bias, behavioural considerations.
S7-3 links from S6-2 and to S7-1, S7-2, S7-4, S8-3.
What is new/changed?
- Identifying non-sampling errors in surveys, including polls.
Possible context elaborations
The legal blood alcohol level and the relative risk of having a fatal crash of 15–19 year olds compared to 30+ year olds:
- Political polls, radio polls, web surveys
Activity: Chocolate statistical literacy
Newspapers: Exploring media-presented statistical information.
Assessment for qualifications
NCEA achievement standards at level 1 and 2 have been aligned to the New Zealand Curriculum. Please ensure that you are using the correct version of the standards by going to the
Aligned level 3 achievement standards will be registered by NZQA for use in 2013.
Full information on the level 3 draft standards and the alignment process can be found on
NCEA on TKI.
The following achievement standard(s) could assess learning outcomes from this AO.
- AS91266 Mathematics and statistics 2.11 Evaluate a statistically based report
- AS91267 Mathematics and statistics 2.12 Apply probability methods in solving problems
Refer to the draft standards matrix.
Last updated September 26, 2012