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Achievement objectives

What has changed:

# 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.

## Indicators

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, for example, 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.

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 between sample, population, sampling variability, and sampling error.
• In a media report on a survey or a poll, identifies and evaluates, using critical questions, sampling methods and possible non-sampling errors such as self-selection, non response bias, behavioural considerations.

## Progression

S7-3 links from S6-2 and to S7-1, S7-2, S7-4, S8-3.

## Possible context elaborations

• CensusAtSchool is a valuable website for classroom activities and information for teachers on all things statistics.
• The legal blood alcohol level and the relative risk of having a fatal crash of 15–19 year olds compared to 30+ year olds:
• Student activity
• Relative risk of 15–20 year olds having a traffic accident compared to 55–60 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, 2 and 3 have been aligned to the New Zealand Curriculum. Please ensure that you are using the correct version of the standards by going to the NZQA website.

The following achievement standard(s) could assess learning outcomes from this AO:

Last updated April 9, 2021