 # Steps figureexpressionequation discussion 1 determine

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StepsFigure/Expression/Equation Discussion1. Determine thecumulative frequencypercentage below thecritical class interval(CF%bCI)305336× 100= 90.77Divide the cumulativefrequency below thecritical class interval bythe total frequency thenmultiply the resultby 100to get 90.772.Determine thefrequencypercentage in criticalclass interval (f%in CI)25336× 100= 7.44Divide the frequency inthe critical class intervalby the total frequencythen multiply the result by100 to get 7.443. Determine thelower boundary ofthe critical classinterval (𝐿𝐵).700.5Just subtract 0.5 from thelower limit of the criticalclass interval.4. Determine thescore and the classsizeScore = 725, class size (i) = 50Based from the givendistribution.5.Substitute thevalue of the variablefrom step 1 to 4 tothe percentile rankformulaPR =CF%bCI+(?−?𝐵𝑖)FP%in CIPR = 90.77 + (725−700.550)(7.44)PR = 90.77 + 3.6456PR = 94.42Subtract the lower limit fromthe score divided by theclass size multiplied by theFP% in critical interval thenadd to the cumulativefrequency percentage belowthe critical class interval.6. Interpret the resultPR = 94.42The result means that thepercentile rank of 725 is
2594.42. This means furtherthat there are 94.42 below725 and 5.58 above it.What’s MoreGuided/Controlled PracticeDirections: Form a group of three and do Activity A. Show your complete solution.Activity A:Given the distribution of sales of 300 E-loading stores in someplaces in Bukidnon per day.Class IntervalsFrequencyCumulative Frequency7 501- 8 00063007 001- 7 500192946 501- 7 000272756 001- 6 500302485 501- 6 000342185 001- 5 500471844 501- 5 000511374 001- 4 500423 501- 4 000333 001- 3 500111. Determine the cumulative frequency percentage.2. How did you get the cumulative frequency percentage?3. What is the cumulative frequency percentage below the critical classinterval (CF%bCI) for the sales of 6,250?4. What is the frequency percentage in the critical class interval (FP%in Cifor the sales of 6,250?5. What is the lower boundary in the critical class interval for the sales of 6,250?6. What is the size of the class interval?7. What is the percentile rank (PR) for the sales of 6,250?8. What does the value of percentile rank mean when the sale is 6,250?9. In the class interval 4 001- 4 500, what is the lower boundary?10. What is the percentile rank for the sales of 4,050?864411)Guided/Controlled PracticeDirections: Look for a partner and answer Activity B as shown below.Show your solution.Activity B. Answer the questions numbered 1 to 10 given the scores of 50students in Mathematics.ScoresFrequencyFrequencypercentage(F%)CumulativeFrequencyCumulativeFrequencyPercentage46 - 50485041 - 458164636 - 401122381009276
2631 - 35918275426 - 301224183621 - 256126121. What is the percentile rank (PR) for the cumulative frequency of 46?2. What does the value of PR for the cumulative frequency of 46 mean?3. What is the percentile rank for the score of 28?

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