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Data Representation

Total questions: 29

Worksheet time: 51mins

Name

Class

Date

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside. Based on the trend line, about how many guests should be expected if the temperature is around 80°?

8,300

7,300

9,300

Looking at the graph, what is the correlation between the x and y variables?

y increases as x increases

y is constant

y decreases as x descreases

y decreases as x increases

Which of the following lines represents the line of best fit for the scatter plot?

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters.

150 pages

170 pages

190 pages

210 pages

What is the equation of the line of best fit?

y= $-\frac{1}{2}x\ +\ 6$

y= $\frac{1}{2}x\ +6$

y= 6x + 2

y = -2x +6

What type of relationship does this graph show?

Positive Association

Negative Association

No Association

What type of relationship does this graph have?

Positive Association

Negative Association

No Association

What is a scatter plot?

A graph that shows the relationship of two data sets.

A graph drawn using rectangular bars to show how large each value is.

A graph that shows information that is connected in some way.

A graph that shows data changing over time.

What type of association does this graph have?

positive

negative

none

all of the above

10.

Which of these points appears to be an “Outlier?”

11.

What type of correlation would you likely see with:

The amount of time spent working compared to the amount of money earned

positive correlation

negative correlation

no correlation

12.

What type of correlation would you likely see with:

The amount of time students spent playing video games the night before a test compared to their respective grades on that test

positive correlation

negative correlation

no correlation

13.

If two quantities A and B exhibit a negative correlation, then as quantity A increases, quantity B would . . .?

stay the same

increase

decrease

14.

If Joe worked 30 hours, how much is he expected to earn?

$600

$200

$1000

$800

15.

What is the equation of the line of best fit

y= -2x + 10

y= 10x+ 2

y=2x+10

y= 10

16.

Is this line an accurate line estimate of best fit for the data?

Yes

17.

Is this line an accurate line estimate of best fit for the data?

Yes

18.

The number of workers in a company.

Discreet

Continuous

19.

Height

Discreet

Continuous

20.

The number of students in a class

Discreet

Continuous

21.

The amount of time required to complete a project

Discreet

Continuous

22.

The number of parts damaged during transportation

Discreet

Continuous

23.

The speed of cars

Discreet

Continuous

24.

x + 9 = 21

(a)

25.

(a)

26.

11b + 7 = 40

(a)

27.

3c + 5 = 23

(a)

28.

6p - 5 =13

(a)

29.

$\frac{m}{2}-1=2$

(a)

100 %

Data Representation

Total questions: 29

Worksheet time: 51mins

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