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WorksheetsPsych: 2.1-2.3 Quiz Review
Total questions: 23
Worksheet time: 21mins
Name
Class
Date
1.
You need to find the median of a data set. What should you do first?
a)
Put the data set in numerical order
b)
Locate the score in the middle of the data set.
c)
Divide the sum of the scores by the number of scores in the set.
d)
Locate the score that occurs most often.
2.
How is the mean of a data set found?
a)
Put the data set in numerical order
b)
Locate the score in the middle of the data set.
c)
Divide the sum of the scores by the number of scores in the set.
d)
Locate the score that occurs most often.
3.
How do I determine the mode of a data set?
a)
Put the data set in numerical order
b)
Locate the score in the middle of the data set.
c)
Divide the sum of the scores by the number of scores in the set.
d)
Locate the score that occurs most often.
4.
You need to find the median of a data set that includes 10 scores. You have already put the scores in numeric order. How will you find the median?
a)
Add the 5th and 6th score together and divide by 2.
b)
Divide the sum of all the scores in the set by 2.
c)
Divide the sum of all the scores by the number of scores in the set.
d)
Locate the score that occurs most often.
5.
Which measure of central tendency is the most stable?
a)
Mean
b)
Median
c)
Mode
6.
Which measure of central tendency is the least stable?
a)
Mean
b)
Median
c)
Mode
7.
What is best measure of central tendency to use when the data have a skewed distribution?
a)
Mean
b)
Median
c)
Mode
8.
What is this a formula for?
x̄ = ΣΧ ∕ n
x̄ = ΣΧ ∕ n
a)
Sample Mean
b)
Population Mean
c)
Standard Distribution
d)
Population Distribution
9.
What does the Greek mu ("μ") symbol represent?
a)
Population Mean
b)
Sample Mean
c)
Amount of population scores
d)
Amount of sample scores
10.
What does the x-bar (x̄) represent?
a)
Population Mean
b)
Sample Mean
c)
Amount of population scores
d)
Amount of sample scores
11.
In statistics, the lowercase n ("n") is a symbol for what?
a)
Population Mean
b)
Sample Mean
c)
Amount of population scores
d)
Amount of sample scores
12.
In statistics, the uppercase n ("N") is a symbol for what?
a)
Population Mean
b)
Sample Mean
c)
Amount of population scores
d)
Amount of sample scores
13.
What is used to determine how likely it is that the differences between sample groups occurred because of chance (or probability)?
a)
Inferential Statistics
b)
Descriptive Statistics
c)
Statistically significant
d)
Probability scores
14.
When measures show a low likelihood of an occurrence happening because of mere chance, then the results are said to be:
a)
Inferential Statistics
b)
Descriptive Statistics
c)
Statistically Significant
d)
Probability scores
15.
Research results that are __________________________ support the researcher's hypothesis.
a)
Inferential Statistics
b)
Descriptive Statistics
c)
Statistically Significant
d)
Probability scores
16.
What is the mode for this data set?
[12, 3, 5, 8, 16, 8, 3]
[12, 3, 5, 8, 16, 8, 3]
a)
3, 8
b)
3
c)
8
d)
5½
17.
What improves sample accuracy?
a)
Inferential statistics
b)
Random Sampling
c)
Descriptive statistics
d)
Control Variables
18.
The measures of central tendencies are one form of:
a)
Descriptive Statistics
b)
Inferential Statistics
c)
Calculus
d)
Experimentation
19.
Mode should only be used when analyzing ____________ data.
a)
Sample
b)
Population
c)
Continuous Data
d)
Categorical Data
20.
Which of these is an example of continuous data?
a)
The daily temperature at noon
b)
Amount of yearly absences
c)
Birthday month
d)
Favorite coffee brand
21.
Sample, population, either, or neither:
The average amount of tax returns in the US, calculated from all of the returns from the IRS.
The average amount of tax returns in the US, calculated from all of the returns from the IRS.
a)
Population
b)
Sample
c)
Either
d)
Neither
22.
Sample, population, either, or neither:
200 women were selected to try out a new weight loss drug targeted toward women.
200 women were selected to try out a new weight loss drug targeted toward women.
a)
Population
b)
Sample
c)
Either
d)
Neither
23.
Sample, population, either, or neither:
All individuals in North America, ages 18-27, who live with their parents.
All individuals in North America, ages 18-27, who live with their parents.
a)
Population
b)
Sample
c)
Either
d)
Neither
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