1 / 8

Two-way Frequency Tables

Two-way Frequency Tables. S.ID.5. There are essentially two types of data: Q uantitative and C ategorical . Examples of categorical data: color, type of pet, gender, ethnic group, etc. Categorical Data is not numerical !

bayard
Download Presentation

Two-way Frequency Tables

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Two-way Frequency Tables S.ID.5

  2. There are essentially two types of data: Quantitative and Categorical. • Examples of categorical data: color, type of pet, gender, ethnic group, etc. • Categorical Data is not numerical! • Examples of quantitative data: age, years of schooling, height, weight, test score, etc. • Quantitative Data is numerical!

  3. More aboutQuantitative and Categorical data: • Categorical Data: • Graphs… Bar Graphs, Pie Charts • Statistics most often used… Frequencies • Quantitative Data: • Graphs… Box & Whisker, Dot Plots, Histograms • Statistics most often used… • Measures of Center (Mean, Median, Mode) • Measures of Spread (Range, IQR, MAD, Outliers) • Others that we have not yet learned

  4. Bivariate data • Bivariate dataconsists of pairs of linked numerical observations, or frequencies of things in categories. • A bivariate or two-way frequency chartis often used with data from two categories.

  5. Joint Frequencies • If no person or thing can be in more than one category per scale, the entries in each cell are called joint frequencies. • Joint Frequenciesare like your joints…in the middle…connected (each cell on the inside of the table).

  6. Marginal Frequencies • Marginal Frequencies are the totals of each category • Marginal Frequenciesare in the MARGIN (the edge where the totals are).

  7. Conditional Frequencies • Conditional Frequenciesare restricted to a particular group (or subgroup)…”given that.”  They do not come from the total data, but from a row total or column total

  8. Relative Frequencies • Relative Frequency is the absolute frequency normalized by the total number of events

More Related