Question 1

Without doing any computations, which of the following distributions has the largest variance?
 
$\begin{array}{cccccc}
\hline X & f & Y & f & Z & f \
\hline 64 & 1 & 50 & 2 & 80 & 3 \
66 & 1 & 60 & 2 & 81 & 2 \
69 & 5 & 75 & 2 & 82 & 2 \
74 & 2 & 80 & 2 & 83 & 2 \
76 & 1 & 85 & 6 & 84 & 2 \
78 & 4 & 90 & 2 & 85 & 4 \
79 & 1 & 95 & 2 & 86 & 2 \
80 & 5 & 100 & 2 & 87 & 3 \
\hline
\end{array}$

Accepted Answer

The answer of Without doing any computations, which of the...

Question 2

Without doing any computations, which of the following distributions has the largest variance?

$\begin{array}{cccccc}
\hline X & f & Y & f & Z & f \
\hline 100 & 1 & 110 & 5 & 99 & 1 \
111 & 4 & 112 & 1 & 120 & 4 \
115 & 1 & 114 & 2 & 125 & 4 \
120 & 1 & 117 & 2 & 127 & 4 \
122 & 4 & 118 & 2 & 130 & 2 \
125 & 1 & 125 & 1 & 132 & 3 \
130 & 1 & 128 & 1 & 135 & 1 \
135 & 7 & 129 & 6 & 175 & 1 \
\hline
\end{array}$

Accepted Answer

The answer of Without doing any computations, which of the...

Question 3

Without doing any computations, which of the following distributions has the largest variance?

$\begin{array}{cccccc}
\hline X & f & Y & f & Z & f \
\hline 30 & 3 & 41 & 2 & 45 & 3 \
36 & 2 & 42 & 4 & 46 & 1 \
40 & 3 & 44 & 2 & 48 & 1 \
41 & 2 & 45 & 4 & 51 & 3 \
48 & 2 & 51 & 2 & 53 & 3 \
50 & 3 & 52 & 2 & 55 & 3 \
52 & 2 & 53 & 2 & 59 & 3 \
60 & 3 & 54 & 2 & 60 & 3 \
\hline
\end{array}$

Accepted Answer

The answer of Without doing any computations, which of the...

Question 4

The mean is a function of which scores in the distribution?

Accepted Answer

A)   All but the two most extreme values
B)   All but the one more extreme score
C)   Every score
D)   Only the largest and smallest scores
E)   Only the middle two valuesF)  The most frequently occurring values

Question 5

Compute the mean for the following values: 4, 8, 6, 1, 0, 9

Accepted Answer

A)   3.89
B)   4.67
C)   5.21
D)   6.00

Question 6

For the following data, and assuming an interval width of 1, compute the following using SPSS:
a. Mode
b. Median
c. Mean
d. Exclusive range
e. Standard deviation
f. Variance

$\begin{array}{r}
\hline X \
\hline15000 \
15000 \
15000 \
15000 \
15000 \
15000 \
15000 \
25000 \
25000 \
25000 \
25000 \
25000 \
42000 \
42000 \
45000 \
45000 \
50000 \
50000 \
65000 \
70000 \
\hline
\end{array}$

Accepted Answer

The answer of For the following data, and assuming an...

Question 7

For the following data, and assuming an interval width of 1, compute the following:

$\begin{array}{r}
\hline X \
\hline 25 \
21 \
16 \
18 \
19 \
21 \
21 \
22 \
17 \
19 \
\hline
\end{array}$

a. Mode
b. Median
c. Mean
d. Exclusive and inclusive range
e. H spread
f. Variance and standard deviation

Accepted Answer

The answer of For the following data, and assuming an...

Question 8

For which measurement scales is computing the mean appropriate? Select all that apply.

Accepted Answer

A)   Nominal
B)   Ordinal
C)   Interval
D)   Ratio

Exam 3: Univariate Population Parameters and Sample Statistics

The mean is a function of which scores in the distribution?

Compute the mean for the following values: 4, 8, 6, 1, 0, 9

For the following data, and assuming an interval width of 1, compute the following: $\begin{array}{r}\hline X \\\hline 25 \\21 \\16 \\18 \\19 \\21 \\21 \\22 \\17 \\19 \\\hline\end{array}$ a. Mode b. Median c. Mean d. Exclusive and inclusive range e. H spread f. Variance and standard deviation

For which measurement scales is computing the mean appropriate? Select all that apply.