I have another Statistics problem that I am needing help with. I must identify w

Question

I have another Statistics problem that I am needing help with. I must identify which statements are correct and which ones must be corrected. Here is the question that I am needing help answering...

Here is a sample of some midterm grades for 5 students: 72, 65, 82, 90, and 76.
Based on this data, which of the following statements are already correct, and which statements need to be fixed/corrected? Please make sure to explain your answer.
a.) The average midterm grade for the sample of five students is 77.
b.) The average midterm grade for all students who took the exam is 77.
c.) An estimate of the average midterm grade for all students who took the exam is 77.
d.) More than half of the students who take this exam will score between 70 and 85.
e.) If five other students are included in the sample, their grades will be between 65 and 90.

Explanation / Answer

s we know mean or average is equal to sum of observations / no of observations.

average mid term grade = 65+72+76+82+90 / 5 = 385/5 = 77.

so a,b,c,d statements are true.

e is false as we dont know the minimum and maximum marks of exam what are the scores of the individual.

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