Question

. Compute all measures of central tendency AND all measures of variability in Chapter 3 Dataset 4 using SPSS. Copy and paste the output here (7 points).

12

15

11

5

3

8

19

16

23

19

Answer #1

In the Frequencies: Statistics dialog box that pops up, check off mean, median, and mode, and other desired statistics. Then, click 'Continue.' Back in the Frequencies dialog box, click OK, and the measures of central tendency and variability will be displayed in a table in the SPSS Viewer output window.

Statistics

VAR00001

N Valid 10

Missing 9

Mean 13.1000

Median 13.5000

Mode 19.00

Std. Deviation 6.48845

Variance 42.100

Range 20.00

Minimum 3.00

Maximum 23.00

5. In the GSS2012 dataset, using Explore, determine the
measures of central tendency and spread for HAPMAR (Happiness of
Marriage). Examine the statistics and determine which measures of
central tendency and spread are most appropriate.
Mean:
1.37
Median:
1.00
Standard deviation: .540
Range:
2
Interquartile Range: 1
Highlight the measure you would use as the measure of central
tendency:
Mean
Median
Mode
Why did you make this selection? Do not give me a definition of
mean/median/mode, but rather...

Calculate the Frequency, Percentages, Central tendency, and
Measures of dispersion for Student Age. Round decimals to the
nearest Third places.
Student Age
Frequency
Percent
Valid Percent
Cumulative Percent
17
15
18
25
19
23
20
46
21
33
22
11
24
26
25
9
Total
188
Missing
13
Total
201

Chapter 11: Using the attached dataset “Chapter 11 Data Set 1”
to test the research hypothesis that males raise their hands in
class more often than females. (Please note that these data are not
exactly the data provided by the author). Is this a directional or
non-directional hypothesis? Should you use a one-tailed or
two-tailed test? What is the corresponding null hypothesis? Conduct
the between groups t-test using Excel (either method). Use the .05
confidence level. What is your conclusion...

Chapter 11: Using the attached dataset “Chapter 11 Data Set 1”
to test the research hypothesis that males raise their hands in
class more often than females. (Please note that these data are not
exactly the data provided by the author).
Is this a directional or non-directional hypothesis?
Should you use a one-tailed or two-tailed test?
What is the corresponding null hypothesis?
Conduct the between groups t-test using Excel (either method).
Use the .05 confidence level. What is your conclusion...

Compute each of the following probabilities. Label each problem
clearly and show all your work. Use the numbers you computed in
earlier parts of the project based on the class data set.
Problem 1: Suppose all of the Skittles in the class data set
are combined into one large bowl and you are going to randomly
select one Skittle.
(a) What is the probability that you select a green Skittle? (4
points)
(b) What is the probability that you select...

CAN SOMEONE please use SPSS and do STEP by STEP???
An investigator predicts that individuals that fit the Type A
Behavior Pattern (highly competitive and time conscious) will have
higher scores on a questionnaire measure of need for achievement
than individuals that fit the Type B Behavior pattern (absence of
Type qualities). The investigator collects need for achievement
scores from 10 Type A subjects and 10 Type B subjects. Higher
scores reflect greater levels of need for achievement.
1.Write the...

Q1.
Please download the dataset “Social W orkers” from Canvas and
use Minitab for all the analysis. The dataset contains salary and
years of experience for 50 social workers. The consulting group
working on these data is interested in evaluating how salary ($)
changes as a person builds up years of experience (x) in the job.
Let’s investigate this question using some of the concepts of
linear regression discussed in class this far.
a)Fit a linear regression model to these...

Here are the numbers of calls received during
20
randomly chosen,
15
-minute time intervals at a customer support service.
1
,
4
,
6
,
6
,
8
,
9
,
11
,
11
,
11
,
12
,
13
,
13
,
14
,
14
,
17
,
17
,
18
,
18
,
21
,
23
(a) Which measures of central tendency do not exist for this
data set? Choose all that apply.
Mean
Median
Mode
None...

1. Based on the information, please compute the following
measures:
Daily Supply (y)
Unit Price (x)
15
11
13
12
17
15
19
8
16
9
(1) Mean for variable y and for x.
(2) Standard deviation for variable y and for variable x.
(Please show the detail computation steps. Please don’t just give
an answer from Excel functions or calculator functions. Otherwise,
you will not get all the points.)
[Hint: (Please see Slide 26 of Chapter 3 for formula)....

Week
Sales (1000s of gallons)
1
16
2
22
3
19
4
24
5
18
6
15
7
19
8
19
9
23
10
20
11
16
12
23
a. Using a weight of 1/2 for the most recent
observation, 1/3 for the second most recent observation, and 1/6
third the most recent observation, compute a three-week weighted
moving average for the time series (to 2 decimals). Enter...

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