One Variable vs. Two Variable Data

One Variable Data

One-variable data sets give measures of ONE ATTRIBUTE.

Some Examples…….

You can recognize one-variable situations when you see:

Tally charts Frequency tables Bar graphs Histograms Pictographs Circle graphs

Two Variable Data

Two-variable data sets give measures of two attributes for each item in a sample.

Some Examples…….

You can recognize two-variable situations when you see…..

Ordered pairs Scatter plots Two-column tables of values

One OR Two Variable Data?

Noah researches annual hours of sunshine in Canadian cities

A study compared the length of time children spend playing video games and the time they spend reading

Fill in the blanks……

As population of a city increases,

increases.

As population of a city increases,

decreases.

As temperature increases,

increases.