Problem Conuser the tllosing frequency strbuton Class 10 up to 20 2° up to 30 30

Question

Problem Conuser the tllosing frequency strbuton Class 10 up to 20 2° up to 30 30 up to 40 40 up to 50 12 15 25 ! a Construct a reive frequency suti Graph a relative requency hsgra b. Constructa cumuative frequency astrbution and acumulative ativ tequency ourution C. what percent of the coïevanons are at kast 30 but kns tran 40? what percent of the observations are wss than 40 egg Study TTBOOK SOToNS DRTOLA Chapter 2, Phoblem 17E Show all seps 3ofsA The following table shons the calclatons of relatine fregoncies d cmatme relate freqeemcies Class 0sp to 1o 31-04429 10pto20 1900-02714 up30800 0114301286+04429+02714 01143-0 9372 01236+04429+02714-08429 Comment

Explanation / Answer

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The answer is wrong. The answer doesn't match the classes ( your suspicion is correct). Also, with the Given table, you should have the following answers ( cumulative frequency of 12+15+25+4 = 56) and not 70

Here's what the table should look like:

Class frequency cumu.freq cumu.rel.freq rel.freq

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10 upto 20 12 12 12/56 = .214 12/56= .214

20 upto 30 15 27 27/56 = .482 15/56= .268

30 upto 40 25 52 52/56 = .923 25/56= .446

40 upto 50 4 56 56/56 = 1 4/56 = .071

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