An ogive is a dot-and-line graph used to summarize the cumulative percent of continuous data at the upper boundary of each interval.
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Correct Answer:
True
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A stem-and-leaf display retains the percent of all data points.
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Correct Answer:
False
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A histogram is used to summarize quantitative, continuous data and a bar graph to summarize qualitative, discrete dat
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Correct Answer:
True
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The real range is the 1+ (the difference between the largest value and the smallest value in a data set).
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Correct Answer:
True
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Summarizing data in a table or graph can make it more difficult to see patterns in the dat
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Correct Answer:
False
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Summarizing data in a table or graph can make it more difficult to see patterns in the dat
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Correct Answer:
False
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All of the following are true of a pie chart, except:
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Correct Answer:
A pie chart is used for continuous dat
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A researcher is interested in exploring how mothers’ education level affects children’s cognitive skills. The data for mothers’ education level is categorical (e.g., some schooling, high school, associate’s degree, college degree). This data would be ________ and can be summarized using ________.
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Correct Answer:
Ungrouped; relative frequency
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A researcher is interested in exploring how mothers’ education level affects children’s cognitive skills. The data for mothers’ education level is categorical (e.g., some schooling, high school, associate’s degree, college degree). This data would be ________ and can be summarized using ________.
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Correct Answer:
Ungrouped; relative frequency
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A ________ uses symbols or illustrations to summarize frequency dat
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Correct Answer:
Pictogram
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A student took the SAT and scored in the 85th percentile. This means that the student scored:
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Correct Answer:
Higher than 85% of people who took the exam.
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A researcher reports that 9 persons in a sample of 45 reported drinking between two and four cups of coffee per day. What is the relative percentage for this interval?
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Correct Answer:
20%
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A student took the SAT and scored in the 85th percentile. This means that the student scored:
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Correct Answer:
Higher than 85% of people who took the exam.
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A developmental psychologist wants to know at most how many words from a list of 24 children will remember. If she constructs a frequency distribution for this data, what type of distribution would be most appropriate to answer her question?
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Correct Answer:
A cumulative frequency distribution from the bottom up
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A researcher distributes frequencies into the following intervals: 0–20, 21–40, 41–60, 61–80, and 81–110. What is wrong with this frequency distribution?
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Correct Answer:
The interval width is unequal.
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The lower and upper limits for each interval in a grouped frequency distribution are called:
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Correct Answer:
Interval boundaries.
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In a simple frequency distribution, to determine _______________, we divide the observed range by the number of intervals.
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Correct Answer:
The interval width
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A ________ uses symbols or illustrations to summarize frequency dat
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Correct Answer:
Pictogram
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A student took the SAT and scored in the 85th percentile. This means that the student scored:
Answer
Correct Answer:
Higher than 85% of people who took the exam.
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A researcher reports that 9 persons in a sample of 45 reported drinking between two and four cups of coffee per day. What is the relative percentage for this interval?
Answer
Correct Answer:
20%
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A student took the SAT and scored in the 85th percentile. This means that the student scored:
Answer
Correct Answer:
Higher than 85% of people who took the exam.
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A developmental psychologist wants to know at most how many words from a list of 24 children will remember. If she constructs a frequency distribution for this data, what type of distribution would be most appropriate to answer her question?
Answer
Correct Answer:
A cumulative frequency distribution from the bottom up
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A researcher distributes frequencies into the following intervals: 0–20, 21–40, 41–60, 61–80, and 81–110. What is wrong with this frequency distribution?
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Correct Answer:
The interval width is unequal.
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The lower and upper limits for each interval in a grouped frequency distribution are called:
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Correct Answer:
Interval boundaries.
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In a simple frequency distribution, to determine _______________, we divide the observed range by the number of intervals.
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Correct Answer:
The interval width
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Upper Boundary is the _____ value in each interval of a grouped frequency distribution.
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Correct Answer:
Largest
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Upper Boundary is the _____ value in each interval of a grouped frequency distribution.
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Correct Answer:
Largest
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A set of scores or categories distributed individually, where the frequency for each individual score or category is counted is known as_____
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Correct Answer:
Ungrouped data
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In Stem and Leaf Plot the remaining digits for each score are listed to left.
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Correct Answer:
False
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In Stem and Leaf Display the data are organized such that the common digits shared by all scores are listed to the left.
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Correct Answer:
True
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Stem refers to the number(s) located to the _____ of the vertical line in a stem-and-leaf display.
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Correct Answer:
Left
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Simple Frequency Distribution is a summary display for all except_____
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Correct Answer:
Distributing the proportion of scores in each interval of a frequency distribution
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Simple Frequency Distribution is a summary display for all except_____
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Correct Answer:
Distributing the proportion of scores in each interval of a frequency distribution
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To find the central angle for each sector, multiply each relative percent by _____
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Correct Answer:
3.6
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Relative Frequency Distribution is computed as the frequency in each interval divided by the _____ recorded.
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Correct Answer:
Total number of frequencies
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Real range is one more than the difference between the largest value and the smallest value in a data set.
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Correct Answer:
True
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Real range is one more than the difference between the largest value and the smallest value in a data set.
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Correct Answer:
True
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The sum of all proportions for a distribution of data is _____
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Correct Answer:
1.0
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Pie Chart is a graphical display in the shape of a _____ that is used to summarize the relative percent of discrete and categorical data into sectors.
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Correct Answer:
Circle
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Pictogram is a summary display that uses _____ to represent a concept, an object, a place, or an event.
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Correct Answer:
Both a and b
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The percentage of scores with values that fall below a specified score in a distribution is known as _____
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Correct Answer:
Percentile rank
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Percentile Point is the value of a score on a measurement scale _____ which a specified percentage of scores in a distribution fall.
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Correct Answer:
Below
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Outliers are the extreme scores that fall substantially _____ most of the scores in a particular data set.
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Correct Answer:
Both a and b
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Open Interval is an interval with no defined upper or lower boundary.
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Correct Answer:
True
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Open Class is an interval with a defined upper or lower boundary.
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Correct Answer:
False
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Ogive is a dot-and-line graph used to summarize the cumulative percent of continuous data at the _____ of each interval.
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Correct Answer:
Upper Boundary
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Lower Boundary means the _____ value in each interval of a grouped frequency distribution.
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Correct Answer:
Smallest
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A leaf lists the_____ in each row.
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Correct Answer:
Both b and c
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Leaf means the number(s) located to the _____ of the vertical line in a stem-and-leaf display.
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Correct Answer:
Right
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The range of values contained in each interval of a grouped frequency distribution is known as_____
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Correct Answer:
Both a and b
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Interval Boundaries refer to _____ limits for each interval in a grouped frequency distribution.
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Correct Answer:
Both upper and lower limits
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A discrete range of values within which the frequency of a subset of scores is contained is known as_____
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Correct Answer:
Interval
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A graphical display used to summarize the frequency of continuous data that are distributed in numeric intervals is known as_____
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Correct Answer:
Histogram
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A graphical display used to summarize the frequency of continuous data that are distributed in numeric intervals is known as_____
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Correct Answer:
Histogram
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Grouped Data is a set of scores distributed into intervals, where the_____ of each score can fall into any given interval.
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Correct Answer:
Frequency
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Frequency Polygon is a_____ graph used to summarize the frequency of continuous data at the midpoint of each interval.
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Correct Answer:
Dot and Line Graph
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A summary display for a distribution of data organized or summarized in terms of how often a category, score, or range of scores occurs is known as_____
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Correct Answer:
Frequency distribution
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Frequency is the number of times or how often a _____ occurs.
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Correct Answer:
All of these
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Relative Frequencies can be added or cumulated from the _____ in a frequency distribution.
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Correct Answer:
Both a and b
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Cumulative Percent Distribution is a summary display that distributes the sum of _____
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Correct Answer:
Relative percentages
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Cumulative Frequency Distribution is a summary display that distributes the_____ of frequencies across a series of intervals.
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Correct Answer:
Sum
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Class Width is the_____ of values contained in each interval of a grouped frequency distribution.
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Correct Answer:
Range
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Bar graph is a graphical display used to summarize the frequency of _____ data.
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Correct Answer:
Both a and b
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Bar chart is a graphical display used to summarize the frequency of _____ data.
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Correct Answer:
Both a and b
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