If researchers want to examine how X is impacted by Y, then ____________________

Question

If researchers want to examine how X is impacted by Y, then
______________________________ is the independent variable. 1 point.
2. Researchers want to know the average work satisfaction of employees at Greendale College.
They survey every employee at in the Department of Behavioral Sciences. Parameter or
estimate? 1 point.
3. In experiments, researchers need to control for ______________________________ variables
that may impact the outcome of the experiment but are not directly related to the study. 1 point.
4. “Rank the quality of your education at Greendale College. Is it above average, average, or
below average?” Nominal, ordinal, interval, or ratio scale of measurement? 1 point.
5. A ______________________________ (e.g., employment status) is a quality that can assume
more than one ______________________________ (e.g., employed, unemployed). 1 point.
6. H1
: There will be a difference in work productivity between people who meditate versus those
who do not. H2

: There will not be a difference in work productivity between people who
meditate versus those who do not. Directional or nondirectional hypotheses? 1 point.
7. The notation for a null hypothesis is ______________________________. In contrast, the
notation for a research hypothesis is ______________________________. 1 point.
8. Researchers surveyed Bernice and her immediate family. “How many hours of television did
you watch in the last 24 hours?” Bernice and her extended family watched an average of 1.9
hours of television in the last 24 hours. Sample or population? 1 point.
9. If researchers want to examine how stress impacts sleep, then
______________________________ is the dependent variable. 1 point.
10.“People in the study exercised an average of 3.2 hours in the last seven days.” Descriptive or
inferential statistic? 1 point.
11.“What is your employment status?” Nominal, ordinal, interval, or ratio scale of measurement? 1
point.

1

12.Researchers want to know the average GPA of students enrolled at Greendale College. They
survey every student enrolled in Statistics for the Behavioral Sciences. Parameter or estimate?
1 point.
13.If researchers survey a subset of all members of a certain group, then the group is called a
______________________________. In contrast, if researchers survey all members of a
certain group, then the group is called a ______________________________. 1 point.
14.“What is your age?” Nominal, ordinal, interval, or ratio scale of measurement? 1 point.
15.Researchers surveyed 500 Greendale College students about social media. The results of the
study suggest that 74% of Greendale College students check social media at least once a day.
Descriptive or inferential statistic? 1 point.
16.Statistics that are collected from samples, but used to describe populations are called
______________________________. In contrast, statistics that describe populations are
called ______________________________. 1 point.
17.Researchers surveyed all students enrolled in Introduction to Sociology at Greendale College.
“What is your GPA?” The average GPA at Greendale College is 3.00. Sample or population? 1
point.
18.If researchers want to examine how mental health is impacted by physical health, then
______________________________ is the independent variable. 1 point.
19.H1
: People who exercise will be less anxious than people who do not exercise. H2

: People who
exercise will be as anxious or more anxious than people who do not exercise. Directional or
nondirectional hypotheses? 1 point.
20.“On a scale of 1 to 10, how satisfied are you with Greendale College?” Nominal, ordinal,
interval, or ratio scale of measurement? 1 point.
21.In most experiments there are two ______________________________ hypotheses (i.e., if
one is true, the other cannot be true). 1 point.
22.The notation for sample size is ______________________________. In contrast, the notation
for population size is ______________________________. 1 point.

2

23.Create 12 intervals. Do not calculate frequency, cumulative frequency, relative frequency,
cumulative relative frequency, or cumulative percent. 4 Points.

n = 30

316 301 289 269 258 238 209 166 126 91
315 299 288 267 253 236 191 159 114 89
311 295 279 266 250 223 183 138 107 81

Intervals

Possible Points Correct Incorrect Tentative Grade Extra Credit

3

24.Thirty participants were shown a list of 100 books. “How many books have you read?”
Construct a grouped frequency distribution with 9 intervals. For each interval calculate
frequency, cumulative frequency, relative frequency, cumulative relative frequency, and
cumulative percent. 10 points.

Books Read (n = 30)

53 49 39 37 33 29 25 20 18 16
51 49 38 37 31 26 23 19 18 16
49 45 37 36 30 25 21 18 17 11

Books Read (n = 30)

Interval Frequency Cumulative
Frequency

Relative
Frequency

Cumulative
Relative
Frequency

Cumulative
Percent

a. The proportion of people who read 25 to 29 books is _______________. 0.5 points.
b. _______________% of the sample read 29 books or less. 0.5 points.
c. _______________ people read 25 to 29 books. 0.5 points.
d. The proportion of people who read 29 books or less is _______________. 0.5 points.
e. _______________ people read 29 books or less. 0.5 points.

Explanation / Answer

Ans 1

Y is the independent variable

Ans 2.

The difference between a statistic and a parameter is that statistics describe a sample. A parameterdescribes an entire population.

Hence it is a static as it surveys just one department

PS : We are directed to solve only the first question when multiple questions are posted or the first 4 parts when multiple parts of the same question are posted.

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