Statistics Project

STATISTICS PROJECT 3

StatisticsProject

Question1 and 2

temperature

frequency

midpoint

relativity

cumulative

36-45

1

40.5

0.02

1

46-55

1

50.5

0.02

2

56-65

0

60.5

0

2

66-75

0

70.5

0

2

76-85

0

80.5

0

2

86-95

18

90.5

0.36

20

96-105

18

100.5

0.36

38

106-115

12

110.5

0.24

50

∑f=50

Questionthree and four are on the other attachment

Question5

  1. Do any of the temperatures appear to be unrealistic or in error? If yes, which ones and why. (4 points)

Yes:there exist two temperatures that are unrealistic. These are 37degree Celsius and 49. They are unrealistic because they are very farfrom the true value of the mean temperature.

  1. Explain how this affects your confidence in the validity of this data set. (4 points)

Thisvalue increases the variability of the dataset from the true value ofthe mean of dataset. This leads to lowering the validity of dataset.

Reference

Dretzke,B. J., &amp Larson, R. (2000). The Microsoft Excel manual,Elementary statistics: picturing the world [by] Larson, Farber. UpperSaddle River, N.J: Pearson Education.