6 questions · timed · auto-graded
| $A$ | $B$ |
| $Q.1.$ Formula to find mean by direct method is | $(a) l+\left[\frac{f_1-f_0}{2 f_1-f_0-f_2}\right] \times h$ |
| $Q.2.$ For grouped frequency distribution, mode $= .....$ | $(b)\bar{x} =\frac{\Sigma f_i x_i}{\Sigma f_i}$ |
| $(c) \quad l+\left[\frac{f_1-f_2}{f_1-f_0 f_2}\right] \times h$ |
| $A$ | $B$ |
| $Q.1.$ Mean by step deviation method is $.........$ | $(a)\bar{x}=a+\frac{\Sigma f_i x_i}{n} \times h $ |
| $Q.2.$ For grouped frequency distribution, mode $=$ | $(b)\ \bar{x}=a+\frac{\Sigma f_i u_i}{\Sigma f_i} \times h$ |
| $(c) 3 ($Median$) – 2 ($mean$)$ |
| $A$ | $B$ |
| $Q.1.$ For a frequency distribution, if $Z =30$ and $M =34$ then $\bar{x}=\ldots \ldots$ | $(a) 26$ |
| $Q.2.$ For any frequency distribution, if $M =24$ and $\bar{x}=22$ then $Z =\ldots \ldots$ | $(b) 36$ |
| $(c) 28$ |
| $A$ | $B$ |
| $Q.1$. If $M =18$ and $Z =20$ for any frequency distribution then $\bar{x}=$__________ | $(a) 27$ |
| $Q.2.$ If $M =42$ and $\bar{x}=35$ for any frequency distribution then $Z =\ldots \ldots.$ | $(b) 56$ |
| $(c) 17$ |
| $A$ | $B$ |
| $Q.1.$ In the formula to find mean by step deviation method, h stands for _________ | $(a) 36$ |
| $Q.2.$ If $Z =32$ and $\bar{x}=44$ for any frequency distribution, then find the value of $M$. | $(b)$ class length |
| $(b) 40$ |
| $A$ | $B$ |
| $Q.1.$ If the number of observation is even, then the median is the average of ________ | $(a) \frac{\frac{n}{2}+\left(\frac{n}{2}+1\right)}{2}$ |
| $Q.2.$ Which equation is not true for the measure of central tendency $?$ | $(b) 2 \bar{x}+ Z =3 M $ |
| $(c) 2 \bar{x}= Z -3 M $ |