Correlation on a Graph

The scatter graph shows the relationship between the amount of rainfall and the number of umbrellas sold each day.

On another day, there was 8.5mm of rainfall. Estimate the number of umbrellas sold on that day.

• 80

• 40

• 120

• 30

Using the line of best fit. If a student had a handspan of 20.5cm, find an estimate for their height

• 20.5 cm

• 155 cm

• 160 cm

• 161 cm

Using the line of best fit. If a student had a height of 146 cm, find an estimate for their handspan?

• 16 cm

• 16.5 cm

• 16.7 cm

• 17 cm

What type of correlation is shown?

• Positive correlation

• Negative correlation

• No correlation

The chart shows the cost and length of some plumbing jobs. Estimate the cost of a job lasting 3.5 hours.

• £160

• £180

• £200

• £220

Which graph has a negative correlation?

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• 
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• 

Which graphs have a positive correlation?

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• 
• 
• 

Which line best fits the scattered plot?

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Which sentence describes the relationship shown on this scatterplot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the number of visitors increases.

• No correlation

What type of correlation does this scatter plot show?

• positive correlation

• negative correlation

• no correlaton