Question

A grouped frequency table with class intervals of equal sizes using 250-270 (270 not included in this interval) as one of the class interval is constructed for the following data:268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304,402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236.The frequency of the class 370-390 is:

a. 0
b. 1
c. 3
d. 5

class 9th question​

Answer 1

SOLUTION

TO CHOOSE THE CORRECT OPTION

A grouped frequency table with class intervals of equal sizes using 250-270 (270 not included in this interval) as one of the class interval is constructed for the following data:268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304,402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236.The frequency of the class 370-390 is:

a. 0

b. 1

c. 3

d. 5

EVALUATION

Here the given data are 268, 220, 368, 258, 242, 310, 272, 342, 310, 290, 300, 320, 319, 304,402, 318, 406, 292, 354, 278, 210, 240, 330, 316, 406, 215, 258, 236.

The class intervals of equal sizes using 250-270 (270 not included in this interval) as one of the class interval

We draw a frequency table from the above data as below

$\begin{gathered} \begin{array}{|c|c| c| } \bf{Class \: Interval} & \bf{Frequency} \\ 210 - 230 & 3 \\ 230 - 250 & 3 \\250 - 270 & 3\\270 - 290 & 2 \\290 - 310 & 4 \\310 - 330 & 6\\330 - 350 & 2\\350 - 370 & 2\\370 - 390 & 0\\390 - 410 & 3\end{array}\end{gathered}$

We observe that frequency of the class 370-390 is 0

FINAL ANSWER

Hence the correct option is a. 0

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Answer 2

Answer:

0 is the answer !!!! ok thanks for your question please bring more tough once