Question

Here is a bivariate data set.

x | y |
---|---|

2.4 | 103.6 |

-6 | 79.2 |

14.3 | 62.7 |

-3.7 | 159.5 |

12.1 | 107.4 |

27.6 | 43 |

34.9 | -95.2 |

Find the correlation coefficient and report it accurate to three
decimal places.

*r* =

Answer #1

**solution**,

X | Y | XY | X^2 | Y^2 |

2.4 | 103.6 | 248.64 | 5.76 | 10732.96 |

-6 | 79.2 | -475.2 | 36 | 6272.64 |

14.3 | 62.7 | 896.61 | 204.49 | 3931.29 |

-3.7 | 159.5 | -590.15 | 13.69 | 25440.25 |

12.1 | 107.4 | 1299.54 | 146.41 | 11534.76 |

27.6 | 43 | 1186.8 | 761.76 | 1849 |

34.9 | -95.2 | -3322.48 | 1218.01 | 9063.04 |

n | 7 |

sum(XY) | -756.24 |

sum(X) | 81.60 |

sum(Y) | 460.20 |

sum(X^2) | 2386.12 |

sum(Y^2) | 68823.94 |

Numerator | -42846.00 |

Denominator | 52074.85 |

r | -0.8228 |

r square | 0.6770 |

**r = - 0.823**

Here is a bivariate data set.
x
y
2.4
103.6
-6
79.2
14.3
62.7
-3.7
159.5
12.1
107.4
27.6
43
34.9
-95.2
Find the correlation coefficient and report it accurate to three
decimal places.
r =

Here is a bivariate data set.
x
y
39.1
42.5
17.1
215.1
28.7
109.5
55.4
18.5
19.9
186.9
9.8
31.2
62.7
-41.6
61.9
-16.5
58.4
-31.2
63.3
-120.1
67.1
124.8
Find the correlation coefficient and report it accurate to three
decimal places.
r =
What proportion of the variation in y can be explained by
the variation in the values of x? Report answer as a
percentage accurate to one decimal place.
r² = %

Here is a bivariate data set.
x
y
69.7
98.7
61
105.6
61.5
114.2
64.9
115.3
50.9
48.5
64.8
74
Find the correlation coefficient and report it accurate to three
decimal places.
r =

Here is a bivariate data set.
x
y
38
12
36
19
26
-17
36
35
40
35
44
48
43
23
25
26
47
62
48
53
Find the correlation coefficient and report it accurate to four
decimal places.
r =

Here is a bivariate data set.
x | y
58.1
55.3
43.3
33.7
74.5
36.9
56.2
27.7
54.4
1
58.2
45.6
56.2
-10.2
50.9
84.1
47.7
39.3
Find the correlation coefficient and report it accurate to three
decimal places. r =

Here is a bivariate data set.
x
y
18
24
25
91
50
117
37
106
29
52
23
81
22
46
Find the correlation coefficient and report it accurate to four
decimal places.
r =

1. Here is a bivariate data set.
x
y
49.7
34.8
43.9
30.9
48
30
46.3
32
46.9
30.3
46.2
34.6
Find the correlation coefficient and report it accurate to three
decimal places.
r =
What proportion of the variation in y can be explained by
the variation in the values of x? Report answer as a
percentage accurate to one decimal place.
r² = %
2. You run a regression analysis on a bivariate set of data
(n=71). With...

Here is a bivariate data set.
x
y
38.3
58.8
38.7
59.5
51.1
39.4
43.8
54
51.2
46.1
45.8
54.9
38.3
55.2
31.7
59.7
35.5
52.3
19.1
70.8
31.9
63.8
50.1
51.7
52.1
48.9
Find the correlation coefficient and report it accurate to three
decimal places.
r = _____

Here is a bivariate data set.
x
y
50
-36
17
129
39
58
19
91
31
84
45
22
18
80
30
92
8
175
Find the correlation coefficient and report it accurate to four
decimal places.
r =

Here is a bivariate data set.
x
y
17
85
36
-0
32
-7
37
11
56
-50
18
87
40
3
5
64
24
28
Find the correlation coefficient and report it accurate to four
decimal places.
r =

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 29 minutes ago

asked 32 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago