In the median formula (grouped data), 'cf' represents the cumulative frequency of the class preceding the median class.

True

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False

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Solution

The correct option is A True

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Similar questions

Q. Find the frequency of the median class if the following information is known for a grouped data whose median is = 45:

Lower limit of median class = 25
Sum of frequencies = 100
Cumulative frequency of the class preceding the median class = 30
And, class size = 10.

Q. Median class of a frequency distribution is 89.5-99.5. If number of observation is 98 and cumulative frequency preceding the median class is 40, find the frequency of median class given that median is 92.5.

Q. Find the frequency of the median class if the following information is known for a grouped data whose median is = 45:

Lower real limit = 25
Sum of frequencies = 100
Cumulative frequency above the median class = 30
And, Size of the class interval = 10.

In the formula for mode of a grouped data,

mode $= l + [\frac{f_{1} - f_{0}}{2 f_{1} - f_{0} - f_{2}}] \times h$ ,

where symbols have their usual meaning, $f_{1}$ represents ___.

In the following data, find the values of $p$ and $q$ Also, find the median class and modal class.

$\begin{matrix} Class & Frequency(f) & Cumulative~frequency(cf) 100 - 200 & 11 & 11 200 - 300 & 12 & p 300 - 400 & 10 & 13 400 - 500 & q & 46 500 - 600 & 20 & 66 600 - 700 & 14 & 80 \end{matrix}$

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