NZ Level 8 (NZC) Level 3 (NCEA) [In development]
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Line of best fit - calculating

Interactive practice questions

The average monthly temperature and the average wind speed in a particular location was plotted over several months. The graph shows the points for each month’s data and their line of best fit.

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Use the line of best fit to approximate the wind speed on a day when the temperature is $5$5°C.

Easy
Less than a minute
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Which of the following could be the equation for the line of best fit?

Consider the scatter plot shown below.

Consider the scatter plot shown below.

Outcomes

S8-1

Carry out investigations of phenomena, using the statistical enquiry cycle: A conducting experiments using experimental design principles, conducting surveys, and using existing data sets B finding, using, and assessing appropriate models (including linear regression for bivariate data and additive models for time-series data), seeking explanations, and making predictions C using informed contextual knowledge, exploratory data analysis, and statistical inference D communicating findings and evaluating all stages of the cycle.

91581

Investigate bivariate measurement data

91582

Use statistical methods to make a formal inference

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