What is a frequency table used for? - ANSWER A frequency table shows the number of
times a certain value occurs within a dataset, which is also known as each value's frequency
The number of daily births at a New York hospital were totaled each day for one week (Mon-
day through Sunday) with the following frequencies: 52, 66, 72, 57, 57, 43, 53.
Create a frequency table - ANSWER Monday- 52- 52/400=13%
Identify each statement below that is true about pie charts. Select all that apply
1 Pie charts are the best for small datasets
2 Pie charts represent the relative frequency of each category
3 Researchers and statisticians typically do not use pie charts
4 Pie charts show the reader the number of items in the dataset - ANSWER 1, 2, 3
What is one advantage of using a bar chart over a pie chart? - ANSWER Unlike pie charts,
bar charts can be used to display the frequencies for numerous categories and are, used
more often to display the results from studies with large datasets.
Name the types of graphs that can be used for quantitative data. - ANSWER 1 Histogram
2 Frequency Polygon
3 Stem and Leaf Plot
4 Box Plot
1
, A frequency distribution polygon measures ______________________.
either interval or ratio scales.
Only nominal scales.
Only ratio scales.
Either nominal or ordinal scales. - ANSWER either interval or ratio scales.
You plot the exam scores using a histogram. If the bars of the histogram increase from left to
right, what conclusion can be made?
1 There are more low scores than high scores.
2 There are more high scores than low scores.
3 Test scores improve over time.
4 The greater the study time, the higher the test score. - ANSWER 2
The exam scores are plotted along the horizontal axis and the frequency of each group of
scores is plotted along the vertical axis. If the height (frequency) increases as you go from
left to right, the low scores on the left have a smaller frequency than the high exam scores
on the right.
Suppose you gathered data for the money spent ($ millions) over a 100- year period in five
different geographic regions of the United States. What graph would best display your find-
ings? - ANSWER Three-dimensional graphs are more effective when used for three-di-
mensional data rather than for two-dimensional data.
In this situation, there are three dimensions: $ millions spent, years, and geographic regions.
Therefore, a three-dimensional graph would best display the data.
mean - ANSWER the average value
median - ANSWER middle value when all scores are listed in ascending order
2
times a certain value occurs within a dataset, which is also known as each value's frequency
The number of daily births at a New York hospital were totaled each day for one week (Mon-
day through Sunday) with the following frequencies: 52, 66, 72, 57, 57, 43, 53.
Create a frequency table - ANSWER Monday- 52- 52/400=13%
Identify each statement below that is true about pie charts. Select all that apply
1 Pie charts are the best for small datasets
2 Pie charts represent the relative frequency of each category
3 Researchers and statisticians typically do not use pie charts
4 Pie charts show the reader the number of items in the dataset - ANSWER 1, 2, 3
What is one advantage of using a bar chart over a pie chart? - ANSWER Unlike pie charts,
bar charts can be used to display the frequencies for numerous categories and are, used
more often to display the results from studies with large datasets.
Name the types of graphs that can be used for quantitative data. - ANSWER 1 Histogram
2 Frequency Polygon
3 Stem and Leaf Plot
4 Box Plot
1
, A frequency distribution polygon measures ______________________.
either interval or ratio scales.
Only nominal scales.
Only ratio scales.
Either nominal or ordinal scales. - ANSWER either interval or ratio scales.
You plot the exam scores using a histogram. If the bars of the histogram increase from left to
right, what conclusion can be made?
1 There are more low scores than high scores.
2 There are more high scores than low scores.
3 Test scores improve over time.
4 The greater the study time, the higher the test score. - ANSWER 2
The exam scores are plotted along the horizontal axis and the frequency of each group of
scores is plotted along the vertical axis. If the height (frequency) increases as you go from
left to right, the low scores on the left have a smaller frequency than the high exam scores
on the right.
Suppose you gathered data for the money spent ($ millions) over a 100- year period in five
different geographic regions of the United States. What graph would best display your find-
ings? - ANSWER Three-dimensional graphs are more effective when used for three-di-
mensional data rather than for two-dimensional data.
In this situation, there are three dimensions: $ millions spent, years, and geographic regions.
Therefore, a three-dimensional graph would best display the data.
mean - ANSWER the average value
median - ANSWER middle value when all scores are listed in ascending order
2
