Regression Analysis

NZ Level 7 (NZC) Level 2 (NCEA)

Fitting functions to Data

The scatter diagram shows the number of restaurants in a city over time.

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a

Which type of model would be appropriate for this data?

Linear

A

Quadratic

B

Linear

A

Quadratic

B

b

Will the slope of the line in the linear model be positive or negative?

Positive

A

Negative

B

Positive

A

Negative

B

Easy

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S7-2 Make inferences from surveys and experiments: A making informal predictions, interpolations, and extrapolations B using sample statistics to make point estimates of population parameters C recognising the effect of sample size on the variability of an estimate

Use statistical methods to make an inference