Scatterplots, Line of Best Fit and Boxplots

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

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

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5

Suppose the equation of the line of best fit for the scatterplot is y=-25x+170

Use the information to predict the remaining distance, when the bicyclist has traveled 3 hours.

• 95 km

• 98 km

• 2 hours

• Not enough information.

Tags

CCSS.HSF.LE.B.5

What percent of students have a height between 58 inches and 60 inches?

• 25%

• 50%

• 75%

• 100%

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is the lower quartile (Q₁)?

• The upper half of the data set when the values are ordered

• The middle of the entire ordered data set

• The median of the lower half of the ordered data set

• The minimum value in the data set

Tags

CCSS.6.SP.B.5C

When calculating the median of an even number of values in a data set, it is

• A single number in the middle

• Found by averaging two middle numbers (values are added together and divided by 2)

• Always most common value

• Found by adding all data values and dividing by the number of values

Tags

CCSS.6.SP.B.5C

What is the Q1 of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 1

• 1.5

• 2

• 2.5

Tags

CCSS.6.SP.B.5C

What is the purpose of a line of best fit?

• To go through every point

• To make predictions about the data

• To go through none of the points

• To tell you absolutely everything about a data set

Tags

CCSS.8.SP.A.2

You plot these points (0,0.5), (1,2), (3,5), (6,7), (10, 8) and draw a scatter plot. If you use the points (2, 3) and (6,6) on the line of best fit to find the equation, which of the following is the equation of the line of best fit?

• y = x

• y = 0.75x + 1.5

• y = x+1

• y = 0.5x+3

Tags

CCSS.8.EE.B.5

This scatterplot shows a ​ (a)   association.

• positive
• negative
• no
• linear
• non-linear
• increase
• decrease

Tags

8.11.A