# Statistical investigation (Is my answer true and I need your help in another question

This questions aims for you to carry out and report on a statistical investigation and interpret the results.

A teacher at the university claims that the longer a student study for a test, the better his/her grade will be in the test. You are asked by the teacher to investigate this claim.

(a) Classify the problem as one of summarizing, comparing or looking for relationships. [2]
looking for relationships
(b) Pose a precise question to investigate the teacher’s claim. [2]

Is there any relation between number of hours of study and grade ??

The table below shows the number of hours studied for a test and the grade scored in the test for 10 students.
Study Hours 4 6 1 8 9 11 4 7 8 3
Grade 55 72 25 87 94 79 65 71 78 48

(c) Use a method of your choice to analyze the data above, as part of your investigation.
This should include a graphical representation of the data. [3]

(e) Can the results of this investigation be generalized to all students at the university?

Tom Mattson
Staff Emeritus
Gold Member
This questions aims for you to carry out and report on a statistical investigation and interpret the results.

A teacher at the university claims that the longer a student study for a test, the better his/her grade will be in the test. You are asked by the teacher to investigate this claim.

(a) Classify the problem as one of summarizing, comparing or looking for relationships. [2]
looking for relationships
(b) Pose a precise question to investigate the teacher’s claim. [2]

Is there any relation between number of hours of study and grade ??

Looks good so far. What do you think about the other questions?