Question

sec 2.3 q.5

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points with line segments. 5. Grade Point Average The following frequency polygon represents the cumulative grade point average of a random sample of students at an engineering school. What Is Your Cumulative Grade Point Average? Frequency 0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25 0 GPA (a) What is the class width? How many classes are represented in the graph? (b) What is the midpoint of the first class? What are the lower and upper limits of the first class? (c) What is the midpoint of the last class? What are the lower and upper limits of the last class? (d) What are the lower and upper limits of the class with 25 students? (e) What are the lower and upper limits of the class with the fewest students?

Answer 1

aidpoints In dida faequncy palygar along platel X-ais differace heln tuo Conserutie 175-1.25 Class width 11 mid-poiats 0.5 number of classes first class to is 1.5 mid point Tarer imit= 1 V Upper 1imit 1.5 to 4 lass class 3.5 mid point lou lim Upper lim 3.75 V 1.5 4 25 5tudent is 2.5 to 3 Class with lowr limit 2.5 pper limit

class is with loust numbed of sludust to 1-5 epuaty lout imit ppcr limit 20