# Grade 8 Statistics & Probability Review (Grade 8)

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## Grade 8 Statistics & Probability Review

1.

The scatter plot shows what type of correlation?

- low positive correlation
- low negative correlation
- high positive correlation
- high negative correlation
- no correlation

2.

The scatter plot shows what type of correlation?

- low positive correlation
- low negative correlation
- high positive correlation
- high negative correlation
- no correlation

3.

The graph of this data would most resemble which of the following types of graphs?

x - 1, 1, 2, 3, 4, 6, 6

y - 10, 9, 8, 7, 6, 5, 4

x - 1, 1, 2, 3, 4, 6, 6

y - 10, 9, 8, 7, 6, 5, 4

- Positive linear
- Negative linear
- Constant linear
- None of the above

4.

If the four data points listed were added to the scatter plot, which point would be an outlier?

- (10, 190)
- (40, 125)
- (75, 50)
- (80, 220)

5.

Typically, air temperature decreases through the night between midnight and 6:00 am. This is an example of what type of association?

- constant association
- positive linear association
- negative linear association
- no association

6.

What would be the slope of a line of best fit?

- [math]1[/math]
- [math]4[/math]
- [math]1/4[/math]
- [math]4/4[/math]

7.

What is the slope of the line of best fit?

- -1
- 24
- 1
- -24

8.

A teacher grades 5 tests in 30 minutes. If a graph was made to show the number of tests per hour that the teacher can grade, what would be the slope of the graph?

- [math]6[/math]
- [math]1/6[/math]
- [math]60[/math]
- [math]10[/math]

9.

A garden hose is used to fill a swimming pool. In 15 minutes, 195 gallons of water is added to the pool and this rate (gallons per minute) remains constant. If this information was graphed, what would be the slope of the graph?

- [math]15/195[/math]
- [math]13[/math]
- [math]1/13[/math]
- [math]39/3[/math]

10.

Jesse grew 1.5 cm this year while Shaniqua grew 2.5 cm. This is an example of

- correlation.
- causation.
- unrelated events.
- a and b.

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