Question

Prepare a frequency table of the following scores obtained by 40 students in a

test:
24,16,17,30,28,20,15,24,16,18,18,15,16,20,25,24,25,20,16,15,18,25,20,18,28,27
,25,24,24,18,18,25,20,16,25,20,27,28,28,16.

This contains 20 points please help me quick

Answer 1

This isn’t with the tally counter since I don’t have paper atm

Score | Frequency
15. 3
16. 6
17. 1
18 6
20. 6
24. 4
25. 6
27. 2
28. 4
30. 1

Answer 2

Element Frequency Cumulative Frequency

15 3 3

16 6 9

17 1 10

18 6 16

20 6 22

24 5 27

25 6 33

27 2 35

28 4 39

30 1 40

Explanation:

Find out how many times an element(data value) appears. That will be the frequency(column 2). The cumulative frequency is the total of all frequencies prior to that element plus the current element frequency

Cumulative frequency for first element is same as its frequency

Cumulative frequency for element 16 is 3 + 6 = 9

Cumulative frequency for element 17 = 3 + 6 + 1 = 9 + 1=10. Basically it is the sum of the previous element cumulative frequency + the current frequency