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Read the following description of a data set. $\newline$ A reporter for a college magazine is writing a feature about student participation in on-campus organizations. He wants to see if there is a relationship between student population and the number of on-campus organizations.To begin, he recorded the number of students, $x$ , and the number of officially recognized student organizations, $y$ , for several colleges.The least squares regression line of this data set is: $y = 0.029x + 31.556$ $\newline$ Complete the following sentence: $\newline$ For each additional student, the least squares regression line predicts there would be ___ more student organizations.

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Interpret regression lines

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Q. Read the following description of a data set.

\newline

A reporter for a college magazine is writing a feature about student participation in on-campus organizations. He wants to see if there is a relationship between student population and the number of on-campus organizations.To begin, he recorded the number of students,

x

, and the number of officially recognized student organizations,

y

, for several colleges.The least squares regression line of this data set is:

y = 0.029x + 31.556

\newline

Complete the following sentence:

\newline

For each additional student, the least squares regression line predicts there would be ___ more student organizations.

Analyze regression equation: Analyze the given regression equation $y = 0.029x + 31.556$ . Here, the coefficient of $x$ ( $0.029$ ) represents the slope of the regression line.
Interpret slope: Interpret the slope: The slope of $0.029$ means that for each additional student (increase in $x$ by $1$ ), the number of student organizations ( $y$ ) is predicted to increase by $0.029$ .

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y = 0.886x - 23.764

Complete the following sentence: The least squares regression line predicts that if a person is one year older, they will be able to name

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\text{(A)Taking your temperature more often is associated with using more cough drops.}

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b

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\frac{60}{30} a+\frac{60}{10} b=24

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weeks, the ferns are harvested and a new crop is planted. If

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5 \mathrm{mg}

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1

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170-20 c=5

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170+20 c=5

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170-15 c=5

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170+15 c=5

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(A) New Mexico residents

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(B) Albuquerque, New Mexico residents

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(C) New Mexico residents ages

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A writer for a high school newspaper is conducting a survey to estimate the number of students that will vote for a particular candidate in an upcoming student government election. All students at the high school are eligible to vote in the election, and the writer decides to select a sample of students to take the survey. Which of the following sampling methods is most likely to produce valid results?

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(A) Survey every fifth student to enter the school library.

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(B) Survey every fifth student to arrive at school one morning.

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(C) Survey every fifth senior to arrive at school one morning.

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(D) Survey every fifth student to enter the school stadium for a football game

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2.5 \%

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(B) Each year, an increasing number of people leave Littleroot Town.

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70 \%

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74.5 \%

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3 \mathrm{~kg}

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2 \mathrm{~kg}

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The penguin gained

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A small accounting firm has

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000

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How will hiring the

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(B) Both the mean and median will decrease, but the mean will decrease by more than the median.

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