Please help me with all of these
1 answer:
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Answer:
.
Step-by-step explanation:
From the given table it is clear that x and y are linearly related.
Now, any two points that satisfy the relation between x and y are sufficient to express the equation.
The first two given points are (2,3), and (4,4).
Therefore, the equation is
⇒
⇒
⇒ . (Answer)
Answer:
And the best option would be:
a. ŷ= 37.643-1.0543x
Step-by-step explanation:
We assume that the data is this one:
x: 34.0, 32.5, 35.0, 31.0, 30.0, 27.5, 29.0
y: 1.30, 3.25, 0.65, 6.50, 5.85, 8.45, 6.50
Find the least-squares line appropriate for this data.
For this case we need to calculate the slope with the following formula:
Where:
So we can find the sums like this:
With these we can find the sums:
And the slope would be:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by:
And the best option would be:
a. ŷ= 37.643-1.0543x