Question

**1.Find the value of the linear correlation coefficient
r. Round to 3 decimal places.**

(47, 8), (46, 10), (27, 10)

**2.Find the value of the linear correlation coefficient
r. Round to 3 decimal places.**

(57, 156), (53, 164), (59, 163)

**3. Find the value of the linear correlation coefficient
r. Round to 3 decimal places.**

(2, 7), (4, 11), (5, 13)

Answer #1

Calculate the linear correlation coefficient for the data below.
Round to three decimal places. x -9 -7 0 -3 -5 -6 -4 -2
-1 y 2 -3 -15 -10 -6 -8 -13 -14-

Determine the value of the coefficient of correlation,
r, for the following data.
X 4 6 7 11
15 17 21
Y 18 13 13 8 7 7 6
(Round the intermediate values to 3 decimal places.
Round your answers to 3 decimal places.)
r = ___

Find the equation of the least-squares regression line
ŷ and the linear correlation coefficient r for
the given data. Round the constants, a, b, and
r, to the nearest hundredth.
{(3, −5), (4, −7), (5, −8), (8, −10), (9, −11)}

Calculate the correlation coefficient, r, for the data
below.
Calculate the correlation coefficient, r, for the data
below.
X= -10 -8 -1 -4 -6 -7 -5 -3 -2 -9
Y= -15 -13 4 -4 -7 -11 -6 -2 1 -13

Given the table below,
find:
a) The correlation coefficient r.
b) Is there a linear correlation between x and y? Explain.
x
1
3
4
5
7
y
5
9
7
1
13

Calculate the linear correlation coefficient for the data
below.
Calculate
the linear correlation coefficient for the data below.
x : 4, 6, 13, 10, 8, 7, 9, 11, 12, 5
y : 17, 12, 0, 5, 9, 10, 7, 2, 1, 14

1. Calculate the correlation coefficient r value using the Z
scores for the two variables. (Round the answer to 2 decimal
places)
2. What is the proportion of variance shared by anxiety level
and externalizing behavior? In other words, how much of the
variance in externalizing behavior can be predicted by the variance
in anxiety level, or vice versa? (Round the answer to 2 decimal
places)
3. What is the effect size in this hypothesis test? (Round the
answer to...

Find the value of the linear correlation coefficient
r.
The paired data below consist of the temperatures on randomly
chosen days and the amount a certain kind of plant grew (in
millimeters).
Temperature 62 76 50 51 71 46 51 44 79
Growth 36 39 50 13 33 33 17 6 16
A.−0.210
B.0.256
C.0.196
D.0

Find the value of the linear correlation coefficient r. The
paired data below consist of the
temperatures on randomly chosen days and the amount a certain kind
of plant grew (in
millimeters).
Temperature
62
76
50
51
71
46
51
44
79
Growth
36
39
50
13
33
33
17
6
16
A) 0.196
B) 0.256
C) 0
D) -0.210

Find the value of the linear correlation coefficient r
X 20.2 40.3 27.5 23.4 30.7
Y 5 5 9 8 10

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