Regression Models — Unit test

Question 1

The table shows the height, in meters, of an object that is dropped as time passes until the object hits the ground.A line of best fit for the data is represented by h = –21.962x + 114.655. Which statement compares the line of best fit with the actual data given by the table?

Revolt · Accepted Answer

According to the line of best fit, the object would have hit the ground 0.6 seconds later than the actual time the object hit the ground.

Question 2

The table shows the average number of hours of daylight per day for the last four months of the year.

Revolt · Accepted Answer

–0.993

Question 3

A graph shows the horizontal axis numbered 1 to 5 and the vertical axis numbered 1 to 5. Points and a line show a downward trend.

Revolt · Accepted Answer

–0.21

Question 4

best

Revolt · Accepted Answer

It is easier to visually compare symmetry and skew of the data.

Question 5

The graph shows the relationship between the price of frozen yogurt and the number of ounces of frozen yogurt sold at different stores and restaurants.

Revolt · Accepted Answer

13

Question 6

Combine these radicals.

Revolt · Accepted Answer

Answer image: https://r14.core.learn.edgenuity.com//media.edgenuity.com/evresources/a31a54ba02ed9566a606b36685dc890c.png

Question 7

Doug bought a new car for $25,000. He estimates his car will depreciate, or lose value, at a rate of 20% per year. The value of his car is modeled by the equation V = P(1 – r)t, where V is the value of the car, P is the price he paid, r is the annual rate of depreciation, and t is the number of years he has owned the car. According to the model, what will be the approximate value of his car after years?

Revolt · Accepted Answer

$9,159

Question 8

Which expression is equivalent to ?

Revolt · Accepted Answer

StartFraction y Superscript one-half Baseline Over x z squared EndFraction

Question 9

The table shows the approximate height of an object x seconds after the object was dropped. The function h(x) = –16x2 + 100 models the data in the table.

Revolt · Accepted Answer

–2.75

Question 10

The table shows the shoe sizes of women of different ages.

Revolt · Accepted Answer

a weak positive correlation

Regression Models — Unit test Answers

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