Question
Mean and Standard deviation of 100 observation is 50 and
10 respectively. What will be the new mean and Standard deviation if each observation is multiplied by 3?Solution
Both mean and SD are affected by change in scale New Mean = 50*3 = 150 New SD = 10*3 = 30
Three of the given options are alike in a certain way. However, one option is not like the other three. Select the option which is different from the ot...
There is a family of six members. There are two married couples. X is a daughter of F, who has two children. F is the mother of Y. Y is the husband of ...
Which of the following numbers will replace the question mark (?) in the given series?
18, 27, 31, 43, 44, 59, 57, ?
If in a code language, 'Red' is called 'Green', 'Green' is called 'Pink', 'Pink' is called 'Brown', and 'Brown' is called 'Violet', then which coloured ...
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which th...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
36 * 12 * 6 * 12 * 3 = 63
Read the given statements, labelled Assertion (A) and Reason (R), and select the most appropriate option with respect to them.
Statement :
...Eight people M, N, P, S, T, V, X and Y are sitting in a straight line and all are facing north.
N sits second from one of the extreme ends of the...
In a certain language, ADDICT is written as DDATCI. How will JAGUAR be written?
The position of how many letters will remain unchanged if each of the letters in the word ‘ABDUCTS’ is arranged in English alphabetical order?
