STATISTICS PORTAGE CNSL 503 EXAM 2||
QUESTIONS AND 100% CORRECT ANSWERS
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frequency distribution - ANSWER: presents the frequency of every value in a
dataset
frequency tables - ANSWER: displays the number of times (ex: frequency) a
certain value appears within the dataset in a table format
What does each column represent in frequency tables? - ANSWER: one column
represents the category, the other column represents the frequency
absolute frequency - ANSWER: raw count
What type of frequency do you use when answering " how many student out of the
total number of students scored a letter grade?"? - ANSWER: relative frequency
What type of frequency graphs are used for quantitative variables? - ANSWER:
histograms, frequency polygons and stem and leaf plots
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pie charts - ANSWER: displays relative frequencies (and not necessarily absolute
frequencies) of each category for qualitative variables in a pie
Each portion of a pie represents... - ANSWER: a different category
The size of each portion is proportional to... - ANSWER: the relative frequency of
that category
The entire pie represents... - ANSWER: 100% of the scores
Pie charts are good to visualize... - ANSWER: frequencies
Pie charts are only useful for... - ANSWER: small number of categories
bar charts/bar graphs - ANSWER: display absolute and relative frequencies of
qualitative data using bars
Each bar represents a - ANSWER: category
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The height of a bar represents... - ANSWER: the frequency
Do the bars touch in a bar graph? - ANSWER: no
histograms - ANSWER: displays absolute and relative frequencies of quantitative
data using bars
Each bar represents... - ANSWER: a category
The height of the bar represents... - ANSWER: the freuqeuncy
Do the bars in a histogram touch? - ANSWER: yes
The width of the bars represent... - ANSWER: the size of the range of values
frequency polygons - ANSWER: display absolute and relative frequencies of
quantitative data using dots and lines