8th data and stats vocab

Front

Bigger group in data collection

Back

population

Front

A part of a large group used for data collection.

Back

sample

Front

A sample collected where every subject has a fair chance of being chosen, usually unbiased and randomly selected. Example: picking a name from a hat.

Back

random sample

Front

Data gathering favoring one population side, yielding desired results.

Back

biased

Front

Graph with data points as dots, visually representing each piece of data.

Back

Scatter plot

Front

Sample taken from what is easiest for the researcher, often biased and not representative of the population.

Back

convenience sample

Front

A sample that accurately reflects the population for making inferences.

Back

representative sample

Front

Gathering data fairly for the population.

Back

unbiased

Front

Line drawn through data points for predictions on a scatter plot

Back

Trend line

Front

Correlation with closely grouped dots indicates low data variation.

Back

Strong