Question

1. If the mean of 12 observations is 36. then the sum of 12 observations is
(A) 12
(B) 432
(C) 36
(D) 144

2.The purpose of organization of data is
i) To obtain any kind of inferences from the data
ii) To get quick and overall view of data
iii) To make the task very tedious and complex
iv) To take decisions accordingly
(A) (ii), (ii) are true
(B) (i), (ii), (iv) are only true
(C) (i), (iii) are true
(D) (i), (iv) are only true


3. In a data, if the first two items are increased by 5 and the last two items are decreased by
5, then their mean value
(A) Increased by 5
(B) Decreased by 5
(C) Zero
(D) Remains the same​

Answer 1

Answer:

1) the answer is (c)

2) The answer is (B)

3)the answer is (C)