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# 2.11 Achievement Objectives

### Excellence

• Evaluate a statistically based report.
• Evaluate a statistically based report, with justification.
• Evaluate a statistically based report, with statistical insight.

This involves identifying and commenting on features and findings of a survey relevant to the report’s purpose.

This involves supporting the comments on the features and findings with reference to statistical evidence and the statistical processes used to carry out the survey.

This involves integrating statistical and contextual information to assess the quality of the report in terms of its purpose.

Achievement Standard 2.11 #91266 (link to NZQA)

Features of a survey include:

• population measures and variables
• sampling methods
• survey methods
• sampling and possible non-sampling errors
• sample size.

### Clarifications

Students should be provided with the statistically based report and, if at all possible, also have access to the actual survey results.

It is important that the statistically based report contains significant statistical features to enable students to discuss both the features of the survey and the findings of the survey in their evaluation. The focus of the standard is the evaluation report, not the student making their own conclusions from the report.

Students can be provided with a list of focus questions to provide a framework for evaluating the report.

For Achieved students are expected to identify and comment on features and findings of a survey relevant to the report's purpose so they need to know/understand what the purpose is in order to do this. It would be usual to expect the purpose to be identified. Students then need to both identify and comment on features and findings, it would be expected that they identify features and also comment on them and identify findings and also comment on them.

For higher grades a step up in the quality of the evaluation is required.

For Merit the step up in the quality of the evaluation is reference to statistical evidence and the processes used. For example processes used could be the survey method, choice of analysis for the survey data.

For Excellence the step up in the quality is the integration of statistical and contextual information - the student needs to be thinking about the consequences of aspects of the report on the findings and how possible issues might be addressed.