MHT CET questions
29293 published questions with worked solutions.
- Find the variance of the following data | Class interval | 4 - 8 | 8 - 12 | 12 - 16 | 16 - 20 | |---|---|---|---|---| | Frequency...
- The standard deviation of the data 6, 5, 9, 13, 12, 8, 10 is
- Consider the following frequency distribution | Class | 0 - 10 | 10 - 20 | 20 - 30 | 30 - 40 | 40 - 50 | 50 - 60 |...
- Consider the following frequency distribution | x | A | 2A | 3A | 4A | 5A | 6A | |---|---|---|---|---|---|---| | f | 2 | 1 | 1 |...
- The mean of 100 observations is 50 and their standard deviation is 5. The sum of squares of all observations is
- The following information relates to a sample of size 60: x^2 = 18000, x = 960. The variance is
- The mean of five observations is 4 and their variance is 5.2. If three of these observations are 1, 2 and 6, then the other two...
- Let a, b, c, d and e be the observations with mean m and standard deviation S. The standard deviation of the observations a+k,...
- If SD of X is , then SD of the variable = aX+b c , where a, b and c are constants, is
- If the SD of a set of observations is 8 and if each observation is divided by -2, then SD of the new set of observations will be
- If the variance of x_1, x_2, x_3, , x_n is m, then variance of 2x_1, 2x_2, 2x_3, , 2x_n is
- If the SD of a set of observations is 4 and if each observation is increased by 2, then SD of the new set of observations will be
- If the SD of x is , then SD of the variable b - ax is
- If the SD of x_1, x_2, x_3, , x_n is 4, then SD of 3 2 x_1, 3 2 x_2, 3 2 x_3, , 3 2 x_n is
- Find the range for the following data 116, 124, 164, 150, 149, 114, 195, 128, 138, 203, 144 is
- The range of the following data, is | Age (in yr) | 14 | 16 | 18 | 20 | 24 | |---|---|---|---|---|---| | Number of Students | 20...
- If x is SD and y is variance of the data a_1, a_2, , a_n, then
- The variance of n observations x_1, x_2, , x_n is given by
- If _ i=1 ^ 9 (x_i - 5) = 9 and _ i=1 ^ 9 (x_i - 5)^2 = 45, then the standard deviation of the 9 items x_1, x_2, , x_9 is
- The mean and variance for the data 6, 7, 10, 12, 13, 4, 8, 12 respectively are