The correlation coefficient is a number that indicates the direction
and closeness of points of a line of best of fit.
So it tells us two things.
It tells us the direction of the line of best fit
and it tells us the closeness of the points.
Usually, anything between -0.9 and -0.6 has a moderate negative correlation. If you look at this on a graph, you will notice that the points definitely resemble a line so we say it's moderate.
It will be a negative correlation because the slope is negative.
Mean, because the outliers are limited.
There will be nights when you get more sleep or less sleep than usual, but overall, they will not be far away from the rest of the data you're comparing.
Answer:

Step-by-step explanation:
Find common difference from subtracting any term in the sequence with the previous term.

Apply nth term formula.





Answer:
Simplifed using FOIL: -15+30t+(3-6t)i
Simplifed using distributive property: 15+30t+(3-6t)i
Step-by-step explanation: