Thx a college professor inputs test scores for the first two tests of the semester to determine the correlation. the scatterplot for the test scores is shown, along with the line of best fit. choose the best estimation for r, the correlation coefficient. a) -0.70 b) -0.30 c) 0.30 d) 0.70

D) 0.70

Step-by-step explanation:

D) 0.70 is correct. As the grades for Test 1 increased, the grades for Test 2 also increased, therefore the trend of the data is positive.

The correlation coefficient is positive, and since the points are close to collinear, D) 0.70 is the best choice.

Hope this helps, have a good day. c;

step-by-step explanation:

the data of the detroit pistons in numerical order from least to greatest is 0.30, 0.37, 0.55, 0.62, 0.69, 0.72, 0.73, 0.75, 0.77, 0.78, 0.80, 0.81, 0.81, 0.83, 0.84, 0.89

the data of the miami heat in numerical order from least to greatest is 0.50, 0.50, 0.56, 0.57, 0.67, 0.72, 0.72, 0.72, 0.75, 0.75, 0.76, 0.81, 0.82, 0.90, 1.00, 1.00

the detroit pistons median : 1.52

the miami heat median: 1.47

the iqr of this data is 0.05