3. Use the following table to answer questions (a – c). x

1

2

3

4

7

8

10

y

1

3

6

2

9

6

7

a. Graph the points above as a scatter plot.

b. Calculate the correlation coefficient.

c. Based on your calculation in part (b) describe the correlation between the

x and y. Explain your reasoning.

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answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.