I got my grade back for the quiz. Two answers were wrong.

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Home >Mathematics homework help >Numerical analysis homework help >I got my grade back for the quiz. Two answers were wrong.

I got my grade back for the quiz. Two answers were wrong. I am forwarding my professors comments below. Please correct since she is giving me the opportunity to resubmit. Thank you. Here are the professor's comments: Check: 2. If the mean is much smaller than the median, then some students wouldn't have larger BMI scores than the rest. The much larger scores would pull the average (the mean) higher. 8: median: we average the 5th and 6th number in ascending (or descending) order, not in the order generated randomly. midrange: as you say, it's the average of the minimum and maximum values. The minimum is smaller than 51. You've got plenty of time to make changes, if you want. Here are the two questions and you responses that were given by another tutor for your convenience:

Question 2.

2. A researcher collected BMI (Body Mass Index) of 50 students in an Engineering school. He found the mean BMI was much smaller than the median BMI. The reason for this might be___ a. Several students had much smaller BMI scores than the other students b. Several students had much larger BMI scores than the rest c. The researcher made some measurement errors d. All the students had smaller BMI scores, compared to national average Tutor answered b. (see professors comment above) Question 8. 8. A simple random sample of pages of my dictionary was collected. These are the number of words defined on each page. Find the mean, median, mode, and midrange.

51 63 36 43 34 62 73 39 53 79

Tutors answer (see professor’s comments above)

Number of words in ascending order 34 36 39 43 51 53 62 63 73 79 Mean = (34+36+39+43+51+53+62+63+73+79)/10 = 53.3 Median = Average of 5th and 6th number = (34+62)/2 = 48 No mode as no number is repeated Midrange = Average of minimum and maximum value = (51+79)/2 = 65