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shtirl [24]
3 years ago
15

With regard to a​ regression-based forecast, the standard error of the estimate gives a measure of A. the variability around the

regression line. B. the time required to derive the forecast equation. C. the maximum error of the forecast. D. the time period for which the forecast is valid.
Mathematics
1 answer:
Travka [436]3 years ago
8 0

Answer:

B. the variability around the regression line.

Step-by-step explanation:

The standard errors represents the distance (how sparse) the observed values fall from the regression line.

Standard errors for regression are measures of the spread of variables around the average (regression line)

The standard error is dependent on the standard deviation of the observations and the reliability of the test.

When the test is perfectly reliable, the standard error is zero and when unreliable, it is equal to the standard deviation of the observations.

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Caroline surveyed 380 of the students in her school about their favorite color. 209 students said their favorite color was blue.
disa [49]

Answer:

55% of the students surveyed said their favorite color was blue

Step-by-step explanation:

\frac{209}{380} as a percent = 55%, or 0.55 in decimal form.

6 0
3 years ago
A new car is purchased for 17900 dollars. The value of the car depreciates at 12.25%
kiruha [24]

Answer:

Therefore the value of the car after 10 year will be = $4,845.34

Step-by-step explanation:

A new car is purchased for $17900. the value of the car depreciates at 12.25% per year.

Since the value of the car depreciates therefore the amount of the car is

A= P(1-\frac{r}{100})^n}

    =17900(1-\frac{12.25}{100})^{10}                [  p = $17900, r = 12.25% and n =10 years]

    = $ 4,845.34

Therefore the value of the car after 10 year will be = $4,845.34

3 0
3 years ago
Cindy and Zoey work at a store. Both girls earn $6.25 per hour
wolverine [178]

Answer:

Step-by-step explanation:

I think this is your full question, right?

<em>Cindy and Zoey work at a store. Both girls earn $6.25 per hour. During a normal week Cindy works 15 hours and  Zoey works 20 hours. The expression 6.25(15) + 6.25(20) can be used to calculate the total amount of money that the  girls earned in one week. Which expression shows another way to calculate the amount of money the girls earn in  one week?  </em>

My answer:

The expression shows another way must be equal to: <em>6.25(15) + 6.25(20)  </em>

<=> 6.25 (15+20)

Because both girls earn the same per hour.

8 0
3 years ago
What is an equation of the line that passes through the points (-4,-2)<br> and (8, 1)?
stiv31 [10]

Answer:

y=1/4x-1

Step-by-step explanation:

7 0
3 years ago
What is the inverse of y = 2x
Nookie1986 [14]

Answer:

........the inverse is 2x = y

4 0
3 years ago
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