Algebra Statistics

Which of the following could be a possible line of best fit for the data?

• y = -5/2x + 20

• y = -x + 19

• y = x + 20

• y = 2/3x + 15 

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

What is the equation of the line of best fit?

• y = 3/2x

• y = 30x

• y = 30x + 300

• y = 3/2x + 300

Tags

CCSS.8.EE.B.5

The equation of the trend line

is y= 1/2x +1

How many laps can a bicycle

make around the park in

23 minutes?

• 44 laps

• 12 1/2 laps

• 23 laps

• 55 laps

Students in a group of chess teams submitted data about hours of team practice and the number of matches the team won. The graph shows the results of the data. Based on the linear regressions equation y = 3.14x + 3.52, if a team practices 4.5 hours per week next year, which is the best prediction of the number of chess matches a team could expect to win?

• about 24

• about 12

• about 8

• about 18

Tags

CCSS.HSF.LE.B.5

Use the line of best fit to approximate rate of change relative to the scatter plot above.

• 7/5

• 5/7

• -7/5

• -5/7

Tags

CCSS.HSF.IF.B.4

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

• Graph A

• Graph B

• Graph C

• Graph D

Tags

CCSS.8.F.A.3

What is the relative frequency for selecting a teen given that the person likes chocolate?

• .112

• .267

• .164

• .056

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 chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

What is the standard deviation for the data given:

{12, 13, 29, 18, 61, 35, 21}

• 293.67

• 15.87

• 17.14

• 41.98