Flashcards
Stats chapter 2
Cards in this deck (23)
- 1Shows the number of observations in each categoryFrequency Distribution
- 2Proportion (%) of observations in each categoryRelative Frequency Distribution
- 3Sum of the frequencies of that class and all classes before itCumulative frequency
- 4Bar graph vertical (descending order)
- 5Bar graphs horizontal side-by-side
- 6Pie chartsCategories are part of a whole
- 7What displays values that occur in a data set and how often each occursFrequency Distribution
- 8What is class width?Distance between two consecutive classes
- 9Class width equationclass width = (maximum - minimum)/(number of classes)
Note: don't forget to round up - 10Class limits...largest and smallest values that belong to a class.
Example: lower class limit 80-89 upper class limit - 11Boundriescutoff points for each class (lower and upper) halfway between two consecutive classes.
- 12MidpointsMidpoints = (lower limit + upper limit)/2
- 13Qualitative bar graph
- 14quantitative bar graphs are known as histograms
- 15A type of exploratory data analysis, arranges data in order, preserves data, not great for large data sets.Stem and Leaf plots
- 16Stemfirst digit/base digits
- 17Leaveslast digit
- 18What are the five distribution shapes?Symmetric/bell shaped, uniform, skewed left, skewed right, bimodal
- 19Symmetric/bell shaped
- 20uniform
- 21Skewed left
- 22Skewed right
- 23Bimodal
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- Flashcards on Stats chapter 2, created by Ashleigh McDevitt on 10/09/2024.
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- Ashleigh McDevitt
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