Alg Unit 7 Day 2 Linear Regression Applications

Linear Regression Applications

By Darryl Padgett

Multiple Choice

What is the median of the data?

• 10

• 12

• 13

• 14

• 18

Multiple Choice

What percent of the data falls between 8 and 10 absences?

• 0%

• 25%

• 50%

• 75%

• 100%

Multiple Choice

What is the interquartile range for this data?

8, 12, 14, 4, 5, 16, 7, 14

• 6

• 8

• 10

• 12

Multiple Choice

33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile (IQ3) of the data?

• 37
• 38
• 40
• 46

Multiple Choice

What data value is the upper quartile (Q3)?

• 64
• 62
• 66
• 58

Enter Data in Desmos in a list.

Categorize

Options (6)

Classify the scatter plot

Positive

Negative

None

Multiple Choice

Does this graph have a positive, negative, or no relationship correlation?

• positive relationship

• negative relationship

• no relationship

Multiple Choice

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit? 

• The more books students read, the lower their English grade.
• The more books students read, the higher their English grade.
• The fewer books students read, the higher their English grade. 
• No relationship exists between the number of books students read and their English grades. 

Multiple Choice

What type of correlation does this graph show?

• Positive correlation

• Negative correlation

• No correlation

• Constant correlation

Fill in the Blanks

How much will I earn if I spend $2500 in advertisement dollars? Remember your answers should be in currency (do not use commas). ie $18536.37 or $1236.77

Multiple Choice

What is the correlation of the data?

• Positive Correlation

• Negative Correlation

• No Correlation

Multiple Choice

Write the linear regression equation for the following data points. Round to the nearest hundredth.

• $$y=-0.83x+0.61$$

• $$y=-0.83x+0.63$$

• $$y=0.83x+-0.8$$

• y = -0.828767x + 0.609589

Multiple Choice

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

• $600
• $200
• $1000
• $800

Multiple Choice

Make a prediction for a resting heart rate after 6 hours of exercise a week.

• 6
• 50
• 55
• 59

Open Ended

How well did you understand today's lesson? One of your classmates is absent today.  Write down one item that they should know based upon today’s lesson.

Multiple Choice

Which relationship is shown by this scatter plot?

• As the cost goes down, the number sold goes down. 

• As the cost goes up, the number sold goes down. 

• As the cost does down, the number sold remains the same. 

• There is no relationship between cost and the number sold.