Statistics Portage CNSL 503 Exam 2 |
Questions and Answers| Updated
frequency distribution
presents the frequency of every value in a dataset
frequency tables
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?
one column represents the category, the other column represents the frequency
absolute frequency
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?"?
relative frequency
relative frequency
the ratio between the absolute frequency of a category and the total frequency
,formula for relative frequency
frequency in category/total frequency
What type of frequency do you use when answering the question "how many
students scored a B or better?"?
cumulative frequency
cumulative frequency
the sum of frequencies of all preceding categories
Frequency tables can be used for what type of variables?
qualitative or quantitative variables
When using frequency tables for quantitative variables, group the quantitative
scores into groups called what?
bins
frequency graphs
pie charts, bar charts, histograms, frequency polygons, stem and leaf plots
What type of frequency graphs are used for qualitative variables?
pie charts and bar charts
What type of frequency graphs are used for quantitative variables?
, histograms, frequency polygons and stem and leaf plots
pie charts
displays relative frequencies (and not necessarily absolute frequencies) of each
category for qualitative variables in a pie
Each portion of a pie represents...
a different category
The size of each portion is proportional to...
the relative frequency of that category
The entire pie represents...
100% of the scores
Pie charts are good to visualize...
frequencies
Questions and Answers| Updated
frequency distribution
presents the frequency of every value in a dataset
frequency tables
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?
one column represents the category, the other column represents the frequency
absolute frequency
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?"?
relative frequency
relative frequency
the ratio between the absolute frequency of a category and the total frequency
,formula for relative frequency
frequency in category/total frequency
What type of frequency do you use when answering the question "how many
students scored a B or better?"?
cumulative frequency
cumulative frequency
the sum of frequencies of all preceding categories
Frequency tables can be used for what type of variables?
qualitative or quantitative variables
When using frequency tables for quantitative variables, group the quantitative
scores into groups called what?
bins
frequency graphs
pie charts, bar charts, histograms, frequency polygons, stem and leaf plots
What type of frequency graphs are used for qualitative variables?
pie charts and bar charts
What type of frequency graphs are used for quantitative variables?
, histograms, frequency polygons and stem and leaf plots
pie charts
displays relative frequencies (and not necessarily absolute frequencies) of each
category for qualitative variables in a pie
Each portion of a pie represents...
a different category
The size of each portion is proportional to...
the relative frequency of that category
The entire pie represents...
100% of the scores
Pie charts are good to visualize...
frequencies
