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A regression line was found to predict Foreign direct investment (FDI) (net inflows (% of GDP)) based on year for Low & middle income countries. The value of R-squared was 0.84. Interpret R-Squared (if applicable).

A random number generator generates a number between 0 and 1. Assume that each number is equally likely between 0 and 1 – including decimals. What is the probability that a number is between 0 and 0.6?

A recent General Social Survey asked respondents how many close friends they had. For a sample of 1467 people, the mean was 7.4. The values go from 1 to 66. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?

The below stem and leaf plot states the sepal (a part of the flower – usually green) length (cm) of a sample of 150 irises.     What is the maximum sepal length?

Below are boxplots of the 40 second sprint times for the NFL combine in 2014 grouped by position (POS). Which of the following positions overall had the lowest median sprint time?  

Look at the below scatterplot and determine what would be a reasonable value for the correlation coefficient. C1 and C3 represent someone’s rating of two different television programs on a scale from 0 to 1.0.  

A regression line was found to predict Foreign direct investment (FDI) (net inflows (% of GDP)) based on year for the Middle East & North Africa. The value of R-squared was 0.427. Interpret R-Squared (if applicable).

Below is a scatterplot describing the relationship between potassium and calories in a single serving of different brands of cereal. Describe using all four characteristics.  

The scores on an exam have a mean of 73. The scores range from 47 to 99. Assume that the data is normally distributed. Which of the following is a plausible value for the standard deviation?

In the summer of 2011, the Chicago libraries recorded the number of participants per branch of the library versus the number of books read from that branch.  They wanted to predict the number of books read at each branch based on the number of participants in the summer program.  The least squares regression equation was  books read = -657.0 +24.74 participants For one branch of the library the number of participants was 1053. The number of books read was 25803.  Find the residual.