chapter 8 PC
Save
Edit
Host a game
Live GameLive
Homework
Solo Practice
Practice
• Question 1
30 seconds
Report an issue
Q.

What type of pattern does a quadratic function have?

constant second differences

none

• Question 2
30 seconds
Report an issue
Q.

What type of a pattern does a logarithmic function have?

mult-mult

none

• Question 3
30 seconds
Report an issue
Q.

What type of pattern does a logistic function have?

constant second differences

mult-mult

none

• Question 4
30 seconds
Report an issue
Q.

Name the function:  $y=a\cdot b^x$

power

exponential

logarithmic

logistic

• Question 5
30 seconds
Report an issue
Q.

Name the function:  $f\left(x\right)=3+7\ln x$

exponential

power

logarithmic

logistic

• Question 6
30 seconds
Report an issue
Q.

Name the function:  $y=a\cdot x^b$

logarithmic

power

exponential

logistic

linear

• Question 7
30 seconds
Report an issue
Q.

Name the function:  $\frac{420}{1+72e^{.7x}}$

logarithmic

exponential

power

logistic

linear

• Question 8
30 seconds
Report an issue
Q.

What is  $\overline{y}$  ?

a. deviation

b. residual

c. average of y's

d. regression equation

a. and c.

• Question 9
30 seconds
Report an issue
Q.

y "hat" is:

a. the residual

b. the regression equation

c. the deviation

d. the predicted y value for each x

b. and d.

• Question 10
30 seconds
Report an issue
Q.

What is the correlation for the following Scatter Plot.

Weak Positive

No Correlation

Strong Negative

Weak Negative

Strong Positive

• Question 11
30 seconds
Report an issue
Q.

What is the correlation for the following Scatter Plot.

Weak Positive

No Correlation

Strong Negative

Weak Negative

Strong Positive

• Question 12
30 seconds
Report an issue
Q.

What is the correlation for the following Scatter Plot.

Weak Positive

No Correlation

Strong Negative

Weak Negative

Strong Positive

• Question 13
30 seconds
Report an issue
Q.

Given the following Scatter Plot, select the option that is most likely the r value.

$r=.27$

$r=-.862$

$r=.934$

$r=.54$

• Question 14
30 seconds
Report an issue
Q.

Given the following Scatter Plot, select the option that is most likely the r value.

$r=-.1$

$r=-.981$

$r=.92$

$r=.765$

• Question 15
30 seconds
Report an issue
Q.

What type of correlation (association)?

The outside temperature and the amount of layers you wear.

A) Positive correlation

B) Negative correlation

D) No correlation

• Question 16
120 seconds
Report an issue
Q.

The scatter plot shows the number coffee shops in different cities and the number of violent crimes. Which of the following is NOT true?

A) As the number of coffee shops increase, violent crimes appears to increase.

B) The line of best fit (regression line) shows a positive correlation

C) The data has a positive correlation coefficient

D) An increase in coffee shops causes an increase in violent crimes

• Question 17
900 seconds
Report an issue
Q. Find the equation of the line of best fit for this table.
y = -2.28x + 51.08
y = 51.08x - 2.28
y = 0.06x - 0.26
y = -2.28x - 0.26
• Question 18
60 seconds
Report an issue
Q.

Shown is a residual plot. How many negative residuals are there?

5

1

3

9

• Question 19
30 seconds
Report an issue
Q. What should a residual plot look like?
Distinct Pattern
Curve
Random
• Question 20
60 seconds
Report an issue
Q. Residuals are . . .
possible models not explored by the researcher
variation in the response variable that is explained by the model
the difference between the observed response and the values predicted by the model
data collected from individuals that is not consistent with the rest of the group
• Question 21
180 seconds
Report an issue
Q. Calculate the quadratic regression function for this table of values to the nearest tenth.
f(x) =
2x2 - 9x + 10
f(x)=
3x2 + 9x - 10
f(x) =
3.1x2 - 9.2x - 10.3
f(x) =
2.1x2 - 8.6x + 10.1
• Question 22
180 seconds
Report an issue
Q. The city of Sugar Land has been experiencing rapid growth. Determine an exponential model for the following data.
y = 18, 718.26(1.13)x
y = 1871826(1.13)x
y = 187.1826(1.13)x
y = 1.8718.26(1.13)x
• Question 23
30 seconds
Report an issue
Q.

Use the following ordered pairs to determine the best regression model: Linear, Quadratic, Cubic, or Exponential?
(0, 250), (1, 280), (2, 284), (3, 249), (4, 202)

Linear

Cubic

Exponential

• Question 24
30 seconds
Report an issue
Q.

$f\left(x\right)=\frac{45}{1+15e^{-1.3x}}$  Using the given function, what is the horizontal asymptote(s)

y=0

y=45

y=15

y=0 and y=45

• Question 25
30 seconds
Report an issue
Q.

$f\left(x\right)=\frac{45}{1+14e^{-1.3x}}$  Using the given function, what is the y-intercept?

(0,3)

(0,1)

(0,15)

(0,45)

• Question 26
30 seconds
Report an issue
Q.

Find the value of c in the equation of the graphed logistic function:

$c=2$

$c=4$

$c=3$

$c=1$

• Question 27
30 seconds
Report an issue
Q.

The function $P\left(x\right)=\frac{5000}{1+6e^{-0.125x}}$  represents the number of people in Indian Trail who are projected to regularly frequent Mr. H's new restaurant each week after his grand opening, where x is the number of weeks after the grand opening.  Approximately how many people are expected to regularly frequent Mr. H's restaurant 8 weeks after his grand opening?

1,559

5,002

1,153

3,281

• Question 28
10 seconds
Report an issue
Q.

What type of function is this?

logarithmic

exponential

Logistic

• Question 29
10 seconds
Report an issue
Q.

What type of function is this?

logarithmic

square root

exponential

rational

• Question 30
10 seconds
Report an issue
Q.

What type of function is this?