40. The S.D. of 7 scores 1, 2, 3.4,5,6,7 is- (2) 2 (1) 4 (3) (4) None of these

The S.D.of 7 scored 1,2,3,4,5,6,7 is

The S.D. of 5 scores 1, 2, 3, 4, 5 is :

The standard deviation of 7 scores 1,2,3,4,5,6,7 is

The standard deviation of 7 scores 1,2,3,4,5,6,7 is

Find the mode of the scores 4, 5, 3, 2, 5,3,6,5,7,1

What will come next in the series given below ? 1 1 2 1 2 3 1 2 3 4 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 6 1 2 3 4 5 6 7 1 2 3 4 5 1) 1 2) 5 3) 6 4) 2 5) None of these

In the following number series how many such 2's are there which are immediately preceded by a pair of numbers whose product is more than the product of pair of numbers immediately following 2 ? 7 7 2 1 3 9 4 2 6 5 2 4 8 3 5 2 7 6 5 2 9 2 8 6 4 3 9 2 4 6 5 7 1) 1 2) 2 3) 3 4) 4 5) None of these

What would come next in the following number sequence ? 2 3 2 3 4 2 3 4 5 2 3 4 5 6 2 3 4 5 6 7 2 3 4 1) 6 2) 5 3) 8 4) 9 5) None of these

Study the following arrangement carefully and answer the questions given below: 1 8 5 9 4 7 1 2 5 8 3 6 5 9 2 7 6 4 5 2 9 2 6 4 1 2 3 5 1 4 2 8 3 Which of the following is fifth to the right of the twelfth digit from the right end of the above arrangement? 1) 3 2) 1 3) 2 4) 7 5) None of these