N404 Statistics

Front 1

Define statistics

Back 1

Describes a set of tools and techniques that is used for describing, organizing and interpreting information or data

Front 2

Define Descriptive Statistics

Back 2

Are used to organize and describe the charateristics of a collection of data

Front 3

The collection of data is sometimes called a ________ _______ or just _________.

Back 3

Data set
data

Front 4

Define Inferential Statistics

Back 4

are often (but not always) the next step after you have collected and summarized data. Interential statistics are used to make inferences froma smallaer group of datat to a possilbe larger one

Front 5

Define sample

Back 5

A subset of a population

Front 6

Define formula

Back 6

A series of cell references and operators that produces a particular outcome

Front 7

Define data point

Back 7

An observation

Front 8

Define Average

Back 8

the most representative score in a set of scores
AKA: Measures of Central Tendency

Front 9

Define Mean

Back 9

A type of average where scores are summed and divided by the number of observations

Front 10

Define Median

Back 10

the point at which 50% of the cases in a distribution fall below and 50% fall above

Front 11

Define Mode

Back 11

A function that returns the most common value in a data set.

Front 12

When should the Mode be used?

Back 12

1.) use the MODE when the data are categorical in nature and values can fit into only one class, such as hair color, political affilitation, neighborhood location, and religion. When this is the case, these categories are called mutually exclusive

Front 13

When should the Median be used?

Back 13

Use the median when you have extreme scores and you don't want to distort the average, such as income.

Front 14

When should the Mean be used?

Back 14

Finally, use the mean when you have data that do not include extreme scores and are not categorical, such as the numerical score on a test or the number of seconds it takes to swim 50 yards.

Front 15

Define Range

Back 15

the highest minus the lowest score, and a gross measure of variability.
1.) Exclusive range is the hightest score minus the lowest score
2.) Inclusive range is the highest score minus the lowest score plus 1.