Linear Regression 1.)
6. A dating service calculates a score for paired couples from 0 (won't last beyond first date) to 3 (marriage
is most likely). The company wants to determine if their formula for love is working. The following is data
with number of days relationship lasted:
Love
2.3 1.9 2.0 1.5 1.7 1.6 1.8 1.0 0.3
Score
Duration 92 92 96 100 102 102
106 106 121 143
in days
a) Construct a scatterplot of the data. Do you think the LSR line will give accurate predictions? Why
or why not?
b) Determine the LSR equation and the value ofr Interpret slope
in the context of the problem.
c) What duration would be predicted if the love score was 2 2?
d) What love score would be predicted if the duration time was 101 days?
e) Examine the residual plot. Does there seem to be any outliers or influential observations? If so,
indicate them
Delete these outliers or influential observation(s), and recalculate the regression line,
B) Redraw the residula plou Have this improved? Explain
h) Was the deleted points), an outlier or influential? Support your response with a reason
2.)
Pass the Problem - Linear Functions and Transformations

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

loloo

step-by-step explanation:

lololool

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation: