Answer:
The regression line is not a good model because there is a pattern in the residual plot.
Step-by-step explanation:
Given is a residual plot for a data set
The residual plot shows scatter plot of x and y
The plotting of points show that there is not likely to be a linear trend of relation between the two variables. It is more likely to be parabolic or exponential.
Hence the regression line cannot be a good model as they do not approach 0.
Also there is not a pattern of linear trend.
D) The regression line is not a good model because there is a pattern in the residual plot.
Answer:
Min - 42
Max - 99
M = 80
Q1 = 70
Q3 = 86
Step-by-step explanation:
The five-number summary is a descriptive statistic that provides information about a set of observations. It consists of the minimum, maximum, median, first quartile, and third quartile.
Answer:
and 
Step-by-step explanation:
Given
[Correct Question]
Required
Solve using elimination
First, we eliminate x.
Subtract equation (1) from (2)
Divide through ny 7
Take
Make x^2 the subject
Substitute 4 for y
Take square roots
Answer:
9x^4-25x^2+16
Step-by-step explanation:
(x^2−1)(3x−4)(3x+4)=(*)
(x^2−1)((3x)^2−4^2) =
(x^2 - 1)(9x^2-16)=
x^2*9x^2 - x^2*16 - 1*9x^2 +16=
9x^4-16x^2-9x^2+16=
9x^4-25x^2+16
(*) (A-B)(A+B) =A^2 - B^2
Answer:
1428
Step-by-step explanation:
I did 16 times 8.5 times 10.5. Good Luck!
