Question

In: Statistics and Probability

Person number X Value Y Value Person number X Value Y Value Person number X Value...

Person

number

X

Value

Y

Value

Person number

X

Value

Y

Value

Person number

X

Value

Y

Value

1

24

30

11

39

42

21

21

27

2

42

53

12

60

65

22

33

29

3

20

27

13

34

40

23

25

27

4

31

30

14

24

26

24

22

25

5

22

24

15

51

57

25

28

33

6

46

47

16

80

83

26

34

40

7

52

60

17

28

27

27

53

55

8

25

28

18

25

29

28

26

28

9

30

30

19

30

31

29

29

33

10

23

27

20

43

44

30

26

29

Work for the first variable, X:

  1. Construct a frequency table, containing at least 5 classes, but no more than 8 classes. [2]

Class

Frequency
  1. Make the following graphs, using Stat Crunch.
  1. histogram [2]
  1. frequency polygon [2]
  1. cumulative frequency polygon [2]
  1. stem and leaf [2]
  1. box plot [2]
  1. Obtain the descriptive statistics. [1]

Solutions

Expert Solution

1. Frequency Table for variable X

min value = 20, max. value = 80

CLASS FREQUENCY

20 - 30 17

30 - 40 5

40 - 50 3

50 - 60 4

60 - 70 0

70 - 80 1

  1. Histogram

  1. The black line over histogram is the frequency polygon.

  1. The ogive is

  1. Stem and Leaf Display

The decimal point is 1 digit(s) to the right of the |

2 | 012234455566889

3 | 0013449

4 | 236

5 | 123

6 | 0

7 |

8 | 0

  1. Boxplot

  1. Descriptive statistics

Min. 1st Qu. Median    Mean 3rd Qu.    Max.

20.00   25.00   29.50   34.20   41.25   80.00

  

  

orchestra answered 3 years ago
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