GRADE - IX : STATISTICS

 

Statistics

Very short Questions:

1.       What do you mean by partition value? Give example.

2.       Write the formula to find the position of Q₃ in individual series.

3.       Write the formula to find coefficient of Q.D.

4.       If Q₃ = 45 and Q₁ = 20, find the value of Q.D.

5.       Which decile is equal to the median?

6.       If N = 199, what is the position of 20^th percentile?

7.       If N = 49, what is the position of 5^th decile?

8.       Write formula to find S.D of individual series.

Short Questions:

1.       Find the value of S.D., if  = 240,  = 16 and N = 10.

2.       If  = 18900,   = 7400 and N = 100, find S.D.

3.       Find S.D. and its coefficient from data 2,4,6,8,10,12

4.     If  = 350 , Median = 25 and N = 40, find M.D from median and its coefficient.

5.       Given that Q₃ is 40 and Q₁ is 15 less than Q₃, then find Q.D and its coefficient.

6.       Find P₃₀ from data 5 , 10, 15, 20, 25, 30, 40, 45

7.       Find D₉ from data 20, 25, 5 , 8, 7, 30, 10, 15, 12

8.       Find Q.D., if the mark obtained by 9 students of grade 9 are: 7,8,12,6,12,22,24,20,19

Long Question

Coming soon………….