A P Singh Solutions for Chapter: Statistics, Exercise 4: PERIODIC TEST (Paper Pen Test)

Mode is equal to:

The point on $\mathrm{X}-$axis, where the perpendicular drawn from the point intersection of curves less than type and greater than type is called

The mode of given data is

$120,\mathrm{}110,\mathrm{}130,\mathrm{}110,\mathrm{}120,\mathrm{}140,\mathrm{}130,\mathrm{}120,\mathrm{}140,\mathrm{}120$

While computing mean of grouped data, we assume that the frequencies are:

In the formula $\overline{x}=a+\frac{\sum {\mathrm{f}}_{\mathrm{i}}{\mathrm{d}}_{\mathrm{i}}}{\sum {\mathrm{f}}_{\mathrm{i}}}$, for finding the mean of grouped data, $d_i$'s are deviations from $\text{'}a\text{'}$ of

The median and mode of a distribution are $21.2$ and $21.4$ respectively. Find its mean.

The numbers  $5, 7, 10, 12, 2x-8, 2x+10, 35, 41, 42, 50$ are arranged in ascending order. If their median is $25$. Find $x$.

If $\sum f_i=11, \sum f_i{x}_i=2x+52$ and the mean of any distribution is $6$. Find the value of $x$