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BRM Quiz 2 Exams (1)
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BRM Quiz 2 Exams (1)
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BRM Quiz 2 ExamsLine Graph - ANS-Quantitative data. Always measures time, which goes on horizontal x -axis.
Intervals of time must be represented equally on the x axis. (not categorical data)
striking deviation= one big curve
Seasonal Variation - Constant Pattern - and it is predicable
Pie Chart - ANS-Categorical data.
Pie Chart must equal 100, but it may not add up to 100 due to rounding.
Do not need all the parts of a whole to create a pie chart., as long as you have another category.
Can always convert it to a bar graph, may not always be able to convert a bar graph into a pair
chart.
Bar Graph - ANS-categorical data.
- all bars on the graph must have the same width and can not touch.
- only sometimes can convert to pie chart only if representing whole
Pictogram - ANS-Must always be represented through a picture and is a bad choice for
graphical display because it is difficult to avoid distortion.
Seasonal Variation - ANS-Constant Pattern - and it is predicable
Histogram - ANS-Only represents quantitative data.
Used for large sets of data.
Classes of a histogram - the # of categories (# of bars)
Outlier = a bar far away from the rest of the bars
Stem Plots - ANS-Used for smaller data sets.
The actual data values can be recovered from the graph
Similar to a histogram turned on its side
Can convert to a histogram
Distribution - ANS-Whenever looking for a distribution you looking for the SHAPE, CENTER,
SPREAD
Distribution of a variable = shows possible values and how often it takes those value
Relative Frequency Histogram - ANS-Used for a large data set vs frequency histogram which
would not be as large.
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