In one experiment we want to evaluate the performance of the students in their STA201 examination. We randomly select a

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In One Experiment We Want To Evaluate The Performance Of The Students In Their Sta201 Examination We Randomly Select A 1 (30.22 KiB) Viewed 95 times

In one experiment we want to evaluate the performance of the students in their STA201 examination. We randomly select a group of 7X+12 students from them. The marks (out of 100) of the students are given in the table below. STA201 marks (out of 100) 20 - 30 30-40 40 - 50 50 - 60 60 - 70 70-80 80-90 90 - 100 Number of students X-3 X/4 2 X 4 8 10 2X+2 a. Compute the average marks. Answer in exact fraction, or rounded to at least 4 decimal places marks b. Compute the median marks. Answer in exact fraction, or rounded to at least 4 decimal places. marks c. Determine the standard deviation value of the marks distribution. Answer in exact fraction, or rounded to at least 4 decimal places. d. Find the Pearson's Coefficient of Skewness using the relation between Mean, Median and Standard Deviation. Answer in exact fraction, or rounded to at least 4 decimal places.