Statistics

1. The data below shows the number of hours students spent studying for a math test and their grade.

Hours Studying	1	4	3	2	4	3	2	1	2
Grade	58	93	80	70	98	85	72	60	75

a) Draw a scatter plot of the data and describe the relationship that exists.

b) Predict the grade for a student who studied for 6 hours. Justify your reasoning.

2) Sofia collected data on the temperature in the testing room and the scores on the test.

a) Which plot shows that no relationship exists between the temperature and the score? Justify your reasoning.

b) Which plot shows a positive correlation exists between the temperature and the score? Justify your reasoning.