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Statistics Portage CNSL 503 Exam 2 with correct Answers
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Statistics Portage CNSL 503 Exam 2
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Statistics Portage CNSL 503 Exam 2frequency 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
relative frequency - Answer the ratio between the absolute frequency of a category and
the total frequency
formula for relative frequency - Answer frequency in category/total frequency
What type of frequency do you use when answering the question "how many students
scored a B or better?"? - Answer cumulative frequency
cumulative frequency - Answer the sum of frequencies of all preceding categories
Frequency tables can be used for what type of variables? - Answer qualitative or
quantitative variables
When using frequency tables for quantitative variables, group the quantitative scores
into groups called what? - Answer bins
frequency graphs - Answer pie charts, bar charts, histograms, frequency polygons, stem
and leaf plots
What type of frequency graphs are used for qualitative variables? - Answer pie charts
and bar charts
What type of frequency graphs are used for quantitative variables? - Answer
histograms, frequency polygons and stem and leaf plots
, 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
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
Each dot is placed... - Answer above the score an the height of the frequency
The dots are connected with a line that begins and ends at... - Answer zero frequency
stem and leaf plot - Answer display frequencies of quantitative data, particularly when
the dataset is small
The stem represents... - Answer the first digits of the score
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