Quartiles divide a distribution into ___________.
4 equal parts
A dot plot can be used to show _________________.
The distribution for a quantitative variable
In a contingency table, we describe the relationship between ________.
Two variables measured at the ordinal or nominal level
Percentiles divide a distribution into _____________.
100 equal parts
The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?
111
What statistics are needed to draw a box plot?
The minimum, maximum, median, first and third quartiles.
What does the interquartile range describe?
The range of the middle 50% of the observations
A dot plot is best applied when _____________________.
A single variable is summarized
Outliers are clearly presented in a _____________.
box plot
To locate the percentile for a given observation in a data set, the data must be ___________.
Sorted and listed from the minimum to the maximum values
In a distribution, the second quartile corresponds with the __________.
median
A contingency table would be used to summarize data such as ________.
Company employees by gender and organizational title
A box plot shows ___________.
The relative symmetry of a distribution for a set of data
In a scatter diagram, we describe the relationship between __________.
Two variables measured at the interval or ratio level
If the coefficient of skewness is equal to zero, the shape of the distribution is __________.
Symmetric
What is the possible range of values for Pearson's coefficient of skewness?
-3 and +3
The range of the coefficient of skewness is ____________.
Both positive and negative values
A dot plot is best applied for a data set with __________.
50 observations
If a student places in the 99th percentile on an exam, she performed better than 99% of all students who completed the exam. Her performance is similar to a statement based on a __________.
Cumulative frequency distribution
A dot plot shows ____________.
Correct The general shape of a distribution