Question

(1 Find the mean for given data with
direct method.
CI
0-2 2-4 4-6 6-8 8-10 10-12 12-14
frequgncy 1, 2 , 1, 5, 6, 2,3​

Answer 1

Answer:

2.85714285714

Step-by-step explanation:

1+2+1+5+6+2+3 = 20

20÷7 = 2.85714285714

Answer 2

Answer:

7.7

Step-by-step explanation:

Class. Fi. Xi. Ui. fiui

0-2. 1. 1. -3. -3

2-4. 2. 3. -2. -4

4-6. 1. 5. -1. -1

6-8. 5. a= 7. 0. 0

8-10. 6. 9. 1. 6

10-12. 2. 11. 2. 4

12-14. 3 13. 3. 9

11

h ×fiui.+a = 2× 11. +7

fi. 20

22×7

20

154. =. 7.7

20

Hope it is right

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