Quiz about Scatterplots, Trend Lines, Correlation

Question 1

Which of the following would be the most accurate equation for the scatter plot?

Accepted Answer

y = 3x + 7

Answer

y = -2x - 7

Answer

y = -x + 7

Answer

y = 25x + 7

Question 2

What is the slope of this trend line?

Accepted Answer

$$-\frac{10}{3}$$

Answer

$$\frac{-70}{3}$$

Answer

$$\frac{-1}{3}$$

Answer

70

Answer

-3

Question 3

Which line appears to fit the data better?

Accepted Answer

line B

Answer

line A

Question 4

Which shows a line of best fit?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 5

If m = 8/5 and b = -8/5, what is the equation of the trend line in y= mx + b?

Accepted Answer

y = 8/5 x - 8/5

Answer

0 = 8/5 (1) - 8/5

Answer

y = -8/5 x + 8/5

Answer

y = mx + b

Question 6

If m = -3/4 and b = 9, what is the equation of the trend line in y= mx + b?

Accepted Answer

y = -3/4 x + 9

Answer

0 = -3/4 (9) +9

Answer

y = -3/4 x - 9

Answer

y = 3/4 + 9

Question 7

What type of correlation?
The temperature outside and the amount of ice cream sales.

Accepted Answer

Positive correlation

Answer

Negative correlation

Answer

No correlation

Question 8

Choose the scatter plot that best represents this relationship: The number of pets someone owns and the size of their shoes

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 9

The scatterplot shows the temp, in degrees, outside a house every hour for 10 hours.

Estimate the temp after 13 hours based off the trendline.

Accepted Answer

57.5

Answer

50

Answer

10

Answer

13

Answer

61.5

Question 10

Which scatter plot shows a linear relationship between x and y?

Accepted Answer

Graph C

Answer

Graph A

Answer

Graph B

Answer

Graph D

Create a free account and access millions of resources

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics