Soc 303 - Statistics for Social Sciences » Spring 2020 » Exam 1
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Question #1
Ordinal measurement is primarily used to:
A.
assign a score
B.
rank order data
C.
both of the above
D.
none of the above
Question #2
If the independent variable is in the columns of a cross-tabulation and the dependent is in the rows, which type of percentages do we use for comparisons?
A.
Total
B.
Column
C.
Any of the above
D.
Row
Question #3
If participants are asked to identify their political party affiliation and they are given the options of Democrats, or Republicans, what level of measurement would this be?
A.
interval
B.
not enough information provided
C.
ordinal
D.
nominal
Question #4
Frequency polygons (AKA line charts) are most meaningful for what times(s) of variable?
A.
both ordinal and interval
B.
nominal
C.
ordinal
D.
interval
Question #5
Interval measurement is used primarily to:
A.
classify or categorize data
B.
classify or categorize data and assign a score
C.
assign a score
D.
none of the above
Question #6
When organizing a frequency table for a variable measured at the ordinal level, how are the categories usually arranged?
A.
it does not matter how the categories are ordered
B.
categories should be ordered just as one measured at the nominal level
C.
categories chould be ordered from highest to lowest and vice-versa by category
D.
categories should be ordered by frequency
Question #7
A hypothesis is a(n):
A.
fundamental unit of scientific observation
B.
observable and measureable variable
C.
scientific fact or truth
D.
statement of the relationship between two or more variables
Question #8
A researcher interested in testing the impact of listening to classical music while studying on students' test performance. Group A consists of 25 students who study while listening to classical music prior to taking the exam. Group B studies in silence and then takes the exam. The experimenter mesaures the differencee between the two groups by comparing the test scores of the two groups. The environment in which the participants studied would be the:
A.
dependent variable
B.
independent variable
C.
manipulated variable
D.
random variable
Question #9
Pie charts are particularly useful for what tye of data?
A.
interval
B.
ordinal
C.
nominal
D.
sequential
Question #10
Which type of distribution of final grades would be most desirable to students?
A.
unimodal
B.
bimodal
C.
negatively skewed
D.
positively skewed
Question #11
Skewness refers to:
A.
the unequal distribution of extreme scores
B.
the normal distribution of extreme scores
C.
the central limit theorem
D.
all of the above
Question #12
Kurtosis refers to:
A.
the symmetry of a distribution
B.
the peakedness of a distribution
C.
the cummulative frequency of a distribution
D.
the skewness of distribution
Question #13
Which measures of central tendency is/are most appropriate for a skewed distribution?
A.
the mean
B.
the mode
C.
both median and mean
D.
the median
Question #14
In a distribution of scores, the score that occurs most frequently is:
A.
the midpoint
B.
the mean
C.
the median
D.
the mode
Question #15
In a distribution of scores, the middlemost scores is:
A.
the median
B.
the midpoint
C.
the mean
D.
the mode
Question #16
A distribution with an equal mean, median and mode is said to be:
A.
symmetrical
B.
bimodal
C.
unimodal
D.
both unimodal and bimodal
Question #17
A distribution with a mean=10, median=12, and mode=14 is said to be:
A.
symmetrical
B.
bimodal
C.
positively skewed
D.
negatively skewed
Question #18
Deviation refers to:
A.
the distance of any score from the mean
B.
the difference between the variance and the median
C.
the number of scores not equal to the mean
D.
the variance between scores
Question #19
Which measures of central tendency cannot be applied to nominal data?
A.
mode
B.
mean
C.
both mean and median
D.
median
Question #20
Which of the following is not a requirement of the nominal scale of measurement:
A.
exhaustiveness
B.
equal intervals between cases
C.
mutual exclusivity
D.
none of the above
Question #21
If the independent variable is in the rows of a cross-tabulation and the dependent varaible in the columns, which type of percentages do we use for comparisons?
A.
any of the above
B.
column
C.
total
D.
rows
Question #22
Which is not a measure of central tendency?
A.
median
B.
mode
C.
variance
D.
mean
Question #23
In a class of 58 students, a survey was taken regarding the type of transportation students used to get to schoool finding that 35 students drove, 18 took public transportation, and 5 walked. What proportion of students took public transportation?
A.
0.1
B.
0.48
C.
0.31
D.
0.73
Question #24
In a class of 58 students, a survey was taken regarding the type of transportation students used to get to schoool finding that 35 students drove, 18 took public transportation, and 5 walked. What percentage of students did not drive?
A.
10.42%
B.
16.67%
C.
72.91%
D.
39.66%
Question #25
Given the following frequency distribution: 1, 8, 16, 2, 6, 2, 7, what is the mode?
A.
2
B.
3
C.
6
D.
16
Question #26
Given the following frequency distribution: 1, 8, 16, 2, 6, 2, 7, what is the median?
A.
4
B.
6
C.
7
D.
5
Question #27
Given the following frequency distribution: 1, 8, 16, 2, 6, 2, 7, what is the mean?
A.
7.14
B.
6
C.
5.93
D.
6.34
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