Question

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VI/ Test scores from a math midterm are as follows: 79, 90, 85, 89, 70, 59, 75, 64, 83, 78, 75, 77, 78, 77, 67, 85, 74, 52, 87, 72, 69, 76, 61, 77, 93, 86, 79, 90, 74, 67, 51, 75, 77, 82, 78, 60, 86, 72, 91, 95, 82 Complete the frequency distribution table to include all data a. Class Tallies Class Midpoint Relative Cumulative Frequency relative freq boundaries Frequency 51 57 58 - 64 65 -71 b. Construct a histogram for the relative frequency distribution. How would you describe its shape c. Which one is modal class (or classes)? d. Draw the ogive e. Find the median f. Find 60th percentile higher (make your best estimate using ogive graph h. What percent of students had score of 70 or VII. Create a data set with n= 13, R=19, Q1-24, Q2=27, Q3=32

Answer 1

elam elan Ta lies Relatiiu Pauquaneny Fre queney Midpaint Cumulatue sulative r boundaries 50.5-54.S O.0422 o 0975 O.I463 o.2439 54.5- 64.5 O.096 64.5-4S 65-4 6 8 o.608 42-8 O.4865 O.40 82 -85 o 0 O.OST2 85.5-92.S 86-92 o.098 1 42. 5-94. 93- II 1 Total Lee ll shaped J almost o.35 realatine 5 Ramtng S0. 5 65 T15 8:5 55 92-49.S e lass ennolari es -

The elass the modal elass as t has max O 8 4 O.2 92-5 ("Y%) Median L adary he medam Lorwer class boun ashore the graup omtai'ning i he to fal number ok valuos. he Buqueney of he median group. eumulative he lfere rrops reguemey at he midiam group fhe C w i the graup andth Median =

O 2 O.1

65 Atudents seore that almost ee Len ce ess Hhen Bas sCore a Ahudents aue almost 25 aigher