Using the data below, put your data into the calculator (Minutes in L1 and Average in L2) then calculate the…

Using the data below, put your data into the calculator (Minutes in L1 and Average in L2) then calculate the correlation coefficient (r ). What is r ? Round your answer to three decimal places.

The math action research team at Sample school completed a fishbone diagram as part of the process to determine root cause of low math test scores.Teaching strategies is one of the possible causes.While investigating the various strategies; staff noticed that the test scores for one classroom were consistently higher that the others in the same grade.

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It was discovered that although all staff used the math games that accompany the curriculum; one teacher had scheduled regular use of the math games.Could this be the difference?

 

Mrs. Alfred scheduled 40 minutes each week for her students to play math games.In addition, she has created a math game center.Students may attend this center each week for additional minutes of practice time.

Mrs. Alfred agreed to record data over several units to help determine if there is a relationship between the regular use of math games and math test scores.She had the students keep track of the number of minutes they spent playing math games during the next unit.

 

If the scatter plot shows a positive relationship – further investigation may be indicated.

 

Student List

Minutes of Math Games in 9 class days (80 class minutes)

Average Test Grade % correct

Student 01

81

84

Student 02

50

45

Student 03

75

75

Student 04

60

52

Student 05

75

72

Student 06

80

96

Student 07

65

62

Student 08

83

82

Student 09

80

90

Student 10

78

78

Student 11

96

96

Student 12

94

94

Student 13

78

62

Student 14

88

100

Student 15

85

85

Student 16

79

88

Student 17

38

25

Student 18

87

91

Student 19

100

100

Student 20

90

99

Student 21

80

90

Student 22

91

95

Student 23

80

80

Student 24

73

73

Student 25

85

95

 

 

 

 

 

 

 

 

 

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