10th Grade ISASP - Statistics and Probability

Which of the following is the best estimate of the value of the y-intercept of a line of best fit for the data graphed below?

• -35

• -10

• 0

• 3

• 70

The box-and-whisker plots below summarize the daily number of downloads of App A and App B over one month.

What percentage of the daily number of App A downloads is less than or equal to the median daily number of App B downloads?

• 15%

• 20%

• 25%

• 50%

• 52%

A random sample of graduates from a particular college program reported their ages and incomes in response to a survey. Each point on the scatterplot above represents the age and income of a different graduate.

Of the following equations, which best fits the data?

According to the box-and-whisker plot, three-fourths of the cars made by Company X got fewer than how many miles per gallon?

• 20

• 24

• 27

• 33

• 40

Jerry spun one of the spinners below 1,000 times and obtained the results shown in the table. Which spinner did Jerry probably use?

• 
• 
• 
• 
• 

From a shipment of 500 batteries, a sample of 25 was selected at random and tested. If 2 batteries in the sample were found to be dead, how many dead batteries would be expected in the entire shipment?

• 10

• 20

• 30

• 40

• 50

The scatterplot shows data for groups R and S . Which of the following statements is true about the correlation between the x and y values of group R and the correlation between the x and y values of group S ?

• The x and y values appear to be negatively correlated in both R and S .

• The x and y values appear to be positively correlated in both R and S .

• The x and y values appear to be negatively correlated in R , but positively correlated in  S

• The x and y values appear to be positively correlated in R , but negatively correlated in S .

• The x and y values appear to be more highly correlated in R than in S .

A contractor is building 5 different model homes on 5 adjacent lots on one side of a street. If 1 house is to be built on each lot, how many different arrangements of the 5 houses are possible?

• 120

• 60

• 25

• 10

• 5