20 students were surveyed and asked asked how many hours they spent on a screen the day before a test. The table summarizes the results. (a) Create a scatterplot (b) Describe the trend (c) Describe the relationship.
20 students were surveyed and asked asked how many hours they spent on a screen the day before a test. The table summarizes the results. (a) Create a scatterplot (b) Describe the trend (c) Describe the relationship.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 8PPS
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Question
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explain your answer in depth.
- math
Transcribed Image Text:Two Variable Statistics
Screen
Mark
Screen
Mark
Time
(%)
Time
(%)
Option 1
(hrs)
(hrs)
85
3.5
75
20 students were surveyed and asked asked how many
hours they spent on a screen the day before a test. The table
summarizes the results.
4
60
3
81
0.5
85
1
78
3
70
5.5
62
(a) Create a scatterplot i
1.5
74
89
(b) Describe the trend.
89
81
(c) Describe the relationship.
84
90
(d) Use Desmos to help you determine the line of best fit and the equation.
3
73
2.5
77
(e) What does the r value/r² value tell you?
1
95
89
(f) Use the equation to algebraically predict the test mark for a student who spends 7
hours on a screen before a test. Use your graph to verify your solution.
2.5
76
4
55
3.
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