Question

The predicted response value is which of these?

Select one:

a. The response value observed for a particular data point

b. The response value that would be predicted for a given x value, based on the model

c. The difference between (the response value observed for a particular data point) and (the response value that would be predicted for a given x value, based on the model)

d. The sum of (the response value observed for a particular data point) and (the response value that would be predicted for a given x value, based on the model)

The predicted response value is which?

Select one:

a. The response value observed for a particular data point

b. The response value that would be predicted for a given x value, based on the model

c. The sum of (the response value observed for a particular data point) and (the response value that would be predicted for a given x value, based on the model)

d. The difference between (the response value observed for a particular data point) and (the response value that would be predicted for a given x value, based on the model)

What is not a valid transformation?

Select one:

a. y-squared

b. natural log of y

c. e to the power of y

d. cosine of y

Which of the following about p-value is true?

Select one:

a. P-value is significant at .95 and above

b. P-value is significant at .01 and below

c. P-value is significant at .90 and above

d. P-value is significant at .01 and above

Consider: revenues = 37.69 + 1.23 x marketing dollars spent

Which of the following is a correct interpretation?

Answer 1

Predicted response value is option b

It is denoted as yhat = b+ b1x

Obtained by putting x values to get y predicted for that given x and is called predicted response variable ..

For 2nd question

Cosine of y is not valid because it is a periodic function , which increases and decreases for different different ranges.

For b1 to be significant we need to reject null hypothesis i.e reject H0 b1=0

So for this pvalue should be less than alpha

Thus Option b is only suitable answer