Practice Test Answers

Does the residual plot show that the line of best fit is appropriate for the data?

According to the line of best fit, about how many ounces of frozen yogurt can someone purchase for 5 dollars ?

Which comparison of the distributions is true?

What is the correlation coefficient for the data in the table?

The box plot represents the number of math problems on the quizzes for an algebra course. Open image in full-screen view What is the range of the data?

Which best describes the strength of the model with an r -value of negative 0 point 9 3 ?

Garth is packing boxes with books. The list shows how many books are in each of 10 boxes. 6, 14, 6, 18, 9, 9, 12, 10, 11, 15 Which statement is true about the number of books packed to a box?

The table shows the results of a survey of 400 random people on whether they like liquid soap, bar soap, or both. Types of Soap Liquid Not Liquid Total Bar 200 100 300 Not Bar 80 20 100 Total 280 120 400 Which is the marginal relative frequency for the people who do not like bar soap?

Which data set has an outlier?

Eighty members of a bike club were asked whether they like touring bikes and whether they like mountain bikes. A total of 70 like touring bikes, 47 like mountain bikes, and 5 do not like either. Types of Bikes Likes Touring Bikes Does Not Like Touring Bikes Total Like Mountain Bikes A b 47 Does Not Like Mountain Bikes c 5 d Total 70 e 80 What are the correct values of A , b , c , d , and e ?

The frequency table shows the results of a survey comparing weekly gasoline costs to the average number of miles a car can drive on a gallon of gasoline. Gas Cost Compared to Mileage Less than 40 dollars /Week Greater than or Equal to 40 dollars /Week Total Less than 30 Miles/Gal 33 77 110 Greater than or Equal to 30 Miles/Gal 27 3 30 Total 60 80 140 Marcel converts the frequency table to a conditional relative frequency table by row. Gas Cost Compared to Mileage Less than 40 dollars /Week Greater than or Equal to 40 dollars /Week Total Less than 30 Miles/Gal cap w cap x 1 point 0 Greater than or Equal to 30 Miles/Gal cap y cap z 1 point 0 Total almost equal to 0 point 4 3 almost equal to 0 point 5 7 1 point 0 Which value should he use for cap y ? Round to the nearest hundredth.

Ms. Barnsley separates her class into two groups. She gives each student the same 25-question math quiz. Group A uses a calculator, while Group B does not. The table shows the completion times, in minutes, of students in each group. Quiz Completion Times (minutes) Group A 4 point 5 4 point 6 5 point 0 4 point 8 4 point 4 4 point 7 5 point 2 4 point 6 4 point 8 4 point 9 Group B 5 point 5 4 point 0 4 point 2 4 point 8 4 point 1 3 point 5 3 point 9 4 point 3 4 point 4 4 point 1 Which statement is true about the distributions of completion times?

The two conditional relative frequency tables below show the results of a survey asking students whether they are taking a foreign language or not. Table A: Frequency of Foreign-Language Studies by Column Taking a Foreign Language Not Taking A Foreign Language Total Middle school 0 point 3 4 0 point 6 4 0 point 4 High school 0 point 6 6 0 point 3 6 0 point 6 Total 1 point 0 1 point 0 1 point 0 Table B: Frequency of Foreign-Language Studies by Row Taking a Foreign Language Not Taking A Foreign Language Total Middle school 0 point 6 8 0 point 3 2 1 point 0 High school 0 point 8 8 0 point 1 2 1 point 0 Total 0 point 8 0 point 2 1 point 0 Which table could be used to answer the question "Assuming a student is taking a foreign language, what is the probability the student is also in high school?”

Which statement is true about the data point 84?

For which value of x would this model make the least sense to use?

Which statements are true about the table? Choose three correct answers.

Which dot plot could represent the same data as the frequency table?

What is the mean of the data?

Which point is an approximate extrapolation for x is equal to 30 from the line of best fit?