Question

By looking at the given x, y data pairs, determine if either ratio estimation, regression estimation, difference estimation, or all of them can be used in estimating the y variable population total. Remember to look at the requirements for using each of these techniques and justify your answers based on these requirements. |

Sample | x | y |

1 | 12 | 60 |

2 | 16 | 87 |

3 | 18 | 91 |

4 | 10 | 50 |

5 | 17 | 94 |

6 | 11 | 62 |

7 | 14 | 67 |

8 | 13 | 64 |

9 | 20 | 106 |

10 | 19 | 102 |

11 | 16 | 85 |

12 | 18 | 92 |

13 | 11 | 57 |

14 | 9 | 46 |

15 | 11 | 61 |

16 | 18 | 96 |

17 | 16 | 79 |

18 | 14 | 73 |

19 | 15 | 78 |

20 | 13 | 70 |

21 | 12 | 66 |

22 | 10 | 55 |

23 | 14 | 73 |

24 | 16 | 83 |

25 | 17 | 88 |

Answer #1

6. Using the class data (see Blackboard file - "Class Survey
Data - PSS-10 and GAS") calculate the correlation between the GAS –
Goal disengagement and the GAS – Goal reengagement scores. Write
the results in a statistical statement.
7. Using the class data calculate the correlation between the
GAS – Goal disengagement and the PSS-10 scores. Write the results
in a statistical statement.
8. Using the class data calculate the correlation between the
GAS – Goal reengagement scores and...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

Cork price: 16 10 15 10 17 11 14 13 11 14 11 16 18 16 10 17 14
14 16 7 10 12 19 15 16 14 9 12 21 13 10 16 12 16 13 17 17 13 14 18
11 12 15 16 13 18 16 17 12 12 14 9 11 14 19 13 11 17 11 13 15 14 18
18 18 12 10 11 13 14 11 14 18 13 13 19 17 14...

If the above data set was matched into pairs, please
analyse the data again to give a new conclusion.
Score for experimental group (with
training)
Score for control group
Subject 1
11
Subject 11
10
Subject 3
18
Subject 20
12
Subject 4
19
Subject 7
16
Subject 6
15
Subject 17
14
Subject 9
14
Subject 10
13
Subject 12
16
Subject 2
15
Subject 13
14
Subject 14
13
Subject 16
12
Subject 15
12
Subject 18
15...

Is there enough evidence that the average number of PURPLE
Skittles in a package is greater than the average number of ORANGE
Skittles in a package? Use the attached Skittles sample and test at
the significance level of .01
Package
Red
Orange
Yellow
Green
Purple
Total
Dominant Color
1
15
15
16
12
14
72
Y
2
13
6
11
16
15
61
G
3
9
9
10
18
15
61
G
4
7
9
8
18
15
57
G...

Test, at the 1% level of significance, whether the average
business has more than 15 employees.
Answer using excel.
Employees
14
17
17
6
8
17
21
16
6
17
11
17
15
16
20
19
6
12
17
22
20
17
11
11
9
22
17
18
21
20
26
7
16
19
18
11
21
17
25
16
22
14
14
16
18
20
21
11
19
13
6
11
19
14
18
31
13
15
17
21...

Read the table below:
X
Y
13
18
14
21
17
19
11
20
12
16
10
13
Determine
1. the correlation coefficient (r)
2. The coefficient of determination (r
2)

Determine if there are any outliers in the data. If so, indicate
each outlier with an ordered pair. If not, write "none."
x
10
12
14
16
18
20
22
y
27
25
23
13
19
17
15

The computer-science aptitude score, x, and the
achievement score, y (measured by a comprehensive final),
were measured for 20 students in a beginning computer-science
course. The results were as follows.
x
3
17
19
14
21
20
14
19
18
15
17
16
9
7
4
21
19
10
20
13
y
19
19
24
36
27
26
25
28
17
27
21
24
18
18
14
28
21
22
20
21
(a) Find the equation of the line of...

Based on the data shown below, calculate the regression line
(each value to two decimal places)
y =_____ x + ______
x
y
5
8.4
6
9.4
7
8.6
8
7.2
9
8.6
10
9.6
11
10.6
12
9.8
13
11.3
14
13.6
15
11.1
16
15
17
15.5
18
13.1

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