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By Team Aakash Byju's | 15th November 2022

A grouped frequency table with class intervals of equal sizes using 250 - 270 (270 not included in this interval) as one of the class intervals is constructed for the following data:

A) 8

The frequency of class 310 - 330 is

Detailed Explanation

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[{"selector":"#anim-3407612a-4fc9-4731-af6c-a6b18177fcfc","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-d5e451f6-9b64-4056-b03a-fa66f81a1c5f","keyframes":{"transform":["translate3d(-116.24204%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] The required class size is given as 20 (250-270 or 310-330). The minimum data value is 210 and the maximum is 406.

[{"selector":"#anim-02910c8a-a990-488f-af72-7faff9e81645","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-7e55b2b9-98df-4615-8768-437fb51a6562","keyframes":{"transform":["translate3d(-116.24204%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] So, let us write the data for each class interval. Class Interval Data Points Frequency 210 - 230 230 - 250 250 - 270 270 - 290 290 - 310 310 - 330 330 - 350 350 - 370 370 - 390 390 - 410 210,215,220 236,240,242 258,258,268 272,278, 290 290,292,300,304, 310 310,310,316,318, 319,320, 330 330,342 354,368 - 402,402,406 3 3 3 2 4 6 2 2 0 3

[{"selector":"#anim-3b59d9b9-7300-4990-9d5f-7926fa3cd356","keyframes":{"opacity":[0,1]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3889fea1-3b82-4dc3-97ed-6463fbddc68b","keyframes":{"transform":["translate3d(-116.24204%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1200,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Therefore, the frequency of the class interval 310 - 330 is 6. Class Interval Data Points Frequency 210 - 230 230 - 250 250 - 270 270 - 290 290 - 310 310 - 330 330 - 350 350 - 370 370 - 390 390 - 410 210,215,220 236,240,242 258,258,268 272,278, 290 290,292,300,304, 310 310,310,316,318, 319,320, 330 330,342 354,368 - 402,402,406 3 3 3 2 4 6 2 2 0 3

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Finding the Frequency for the Given Class Interval

A grouped frequency table with class intervals of equal sizes using 250 - 270 (270 not included in this interval) as one of the class intervals is constructed for the following data:

A) 8

B) 6

C) 7

D) 5

Detailed Explanation

The right answer is B) 6

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