Flashcards in Round 2 Lecture 2 Deck (9)

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1

##
Discrete Data

###
- Frequency Tables

- Charts (pie, bar, etc.)

- Cross Tabs

2

##
Continuous Data

###
- Descriptive Statistics

- Histograms

- Boxplots

3

## Summary statistics

###
describe data sets or relationships between variables with one or a few numbers:

-What is the central value?

-How widely are values spread from the center? Are there -data that are very atypical?

-Are variables related?

4

## mean

### The sum of the values for all observations of a variable divided by the number of observations.

5

## median

### The observation below which 50%of the observations fall.

6

## mode

### The value that occurs most frequently.

7

## variance

### The sum of the squared deviations from the mean divided by the number of observations minus one

8

## interquartile range

### Difference between the first and third quartiles of the distribution

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