Question

Help me plz

One thousand and twenty students participated in the school math contest.
Sample 1 is a random sample from grades 9 and 10 and consists of the following scores: 72, 89, 67, 81, 75, 79, 81, 80, 62, 64, 83.
Sample 2 is a random sample from grades 11 and 12 and consists of the following scores: 84, 86, 87, 84, 86, 89, 90, 87, 87, 84, 86.
Choose the following statements that correctly compare the two samples.

Check all that are true.

Sample 2 shows 11th and 12th grade students, on average, did better.

Sample 1 has a higher probability than Sample 2.

The measure of center is the same for both samples.

Sample 1 shows 9th and 10th grade students, on average, did better.

Sample 2 has a higher median score than Sample 1.

Answer 1

what you do is you find the smaller and the biggest number and subtract the smallest number from the bigger one and you would do this with both of them so with the first one you would subtract 62 from 89 and you would get 27 then you would do 90 - 84 and you would get 6 so after you have done all of that you would get the answer of sample 1 shows 9th and 10th grade students, on average did better.