Question

ValueFind the number of observation between 250 and 300from the following data:More More More Morethan 200 than 250 than 300 than 350No. of 96 69 51observation​

Answer 1

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Answer 2

Step-by-step-Explanation:

Given that:Find the number of observation between 250 and 300

from the following data:

More More More More

than 200 than 250 than 300 than 350

No. of 96 69 51 0

To find: Number of observation between 250 and 300

Solution:

To find Number of observation between 250 and 300

First make frequency distribution table from more than cumulative frequency distribution.

How to make frequency table from more than cumulative frequency:

• Take the last Cumulative frequency as it is.
• Subtract last CF from second last CF,resultant will be put in frequency of that class.
• Subtract second CF from third last CF,resultant will be put in frequency of that class.and so on...
• For verification,all the frequencies are correct,add all the frequencies.Sum will be equal to first more than CF

For that tabulate the given data

$\begin{tabular}{|c|c|c|c|}\cline{1-3}Class\:Interval& Number\:of\: students(CF)&\:frequency(f)\\\cline{1-3}200-250&96&27\\\cline{1-3}250-300&69&18\\\cline{1-3}300-350&51&51\\\cline{1-3}350-400&0&0\\\cline{1-3}Total& &96\\\cline{1-3}\end{tabular}$

*Scroll screen to right to see the full table.

It is clear that,

No. of observation in between 250-300 are 18.

Hope it helps you.