Statistical Exercise

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The following data represents the daily telephone calls received at a call center:

39

42

30

48

35

40

27

25

28

34

33

38

25

34

32

28

42

35

34

37

40

30

31

36

40

45

36

41

34

29

 

A.- Use five classes and prepare frequency distribution, histogram, polygon, and warhead. What is the form of distribution? Which graph shows the shape of the distribution?

B- Prepare the dot plot and stem and stem diagram for ungrouped data. Compare these two graphs with the histogram and the previously made polygon.