Select a Chapter to start the quiz.
In either grouped or ungrouped data, the most frequent attribute is the ______.
mean
mode
median
standard deviation
The mean, median, and mode are all measures of central tendency used by researchers.
The ______ is the difference between the largest and the smallest numbers in the set.
range
If a researcher wishes to show multiple distributions in the same category simultaneously, which of the following is best suited for this?
pie chart
line graph
regression
bivariate table
The ______ is known to visually depict relationships and patterns among variables.
variance
graph
outliers
quartiles
When distributions lack the perfect symmetry of having the mean, median, and mode in the center, and are symmetric in their shape when viewed as a histogram, what are they termed?
normal distribution
abnormal distribution
frequency distribution
skewed distribution
The most common measures of variability are the variance and standard deviation.
Which of the following is one advantage of using the cumulative percent?
its ability to group aggregate numbers and group categories together to display the collective percentage of two or more categories together
its cost effectiveness
its time effectiveness
its ability to be sensitive to the order of organization
Statistical analysis that allows scientists to confidently make accurate statements about a population is called ______.
descriptive statistics
univariate statistics
inferential statistics
The degree to which data in a data set spread out or deviate from the center is called variability.
The most frequently used number in a database is the ______.
frequency
To measure how spread out a distribution is from the mean, a researcher would usually use the standard deviation and the variance.
The College of Liberal Arts and Social Science at Wayne State University has nine departments. The number of faculty in each department is shown here: 8, 12, 9, 15, 17, 11, 13, 14, 7. What is the median number of faculty in departments in the College of Liberal Arts and Social Science?
12
17
4.5
5.7
A researcher wants to express the middle of a distribution of numbers, such that half the cases are higher than and half lower than a certain number. The correct statistical measure to use would be the ______.
Creating a ______ will help a researcher observe the key characteristics of participants in the sample.
histogram
bar graph
