| 2024-05-12 | A sample of 35 observations has the mean 80 and Standard deviation as 4 . A second sample of 65 .... |
| 2024-05-12 | In a class of 100 students there are 70 boys whose average marks in a subject are 75 . If the av.... |
| 2024-05-12 | The variance of \(\alpha, \beta\) and \(\gamma\) is 9 , then variance of \(5 \alpha, 5 \beta\) a.... |
| 2024-05-12 | The median of a set of 9 distinct observation is 20.5 . If each of the largest 4 observations of.... |
| 2024-05-12 | If the standard deviation of the observations \(-5,-4,-3\), \(-2,-1,0,1,2,3,4,5\) is \(\sqrt{10}.... |
| 2024-05-12 | The average of \(n\) numbers \(x_1, x_2, x_3, \ldots, x_n\) is \(M\). If \(x_1\) is replaced by .... |
| 2024-05-12 | The mean value of the median and mean of the odd divisors of 360 is .... |
| 2024-05-12 | The standard deviation of a variate \(x\) is \(\sigma\). The standard deviation of the variable .... |
| 2024-05-12 | The Standard deviation of 7 scores \(1,2,3,4,5,6,7\) is .... |
| 2024-05-12 | Mean of \(n\) items is \(\bar{x}\). If these \(n\) items are increased by \(1^2, 2^2, 3^2, \ldot.... |
| 2024-05-12 | Find the mean deviation about the mean for the data
.... |
| 2024-05-12 | Mean deviation from the mean for the observations \(-1,0,4\) is .... |
| 2024-05-12 | If median \(=(\) mode +2 mean \() M\), then \(M\) is equal to: .... |
| 2024-05-12 | The mean of a group of 100 observations was found to be 20 . Later on: it was found that three o.... |
| 2024-05-12 | If a variable takes the discrete values\[\alpha+4, \alpha-\frac{7}{2}, \alpha-\frac{5}{2}, \alph.... |
| 2024-05-12 | The median of \(10,14,11,9,8,12,6\) is .... |
| 2024-05-12 | The mean of first three terms is 14 and mean of next two terms is 18 . The mean of all the five .... |
| 2024-05-12 | The harmonic mean of \(4,8,16\) is: .... |
| 2024-05-12 | Let the tangents at the points P and Q on the ellipse x22+y24=1 meet at the point R(2,22-2).... |
| 2024-05-12 | If the mean of first \(n\) natural numbers is equal to \(\frac{n+7}{3}\), then \(n\) is equal to.... |
| 2024-05-12 | The mean of a set of observations is \(\bar{x}\). If each observation is divided by \(\alpha, \a.... |
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