Scatter Plots and Trend Lines (fill in the blank)

Scatter Plots: show _____ sets of data, written as ordered pairs, on a coordinate plane.

• 1

• 2

• 3

• 4

Positive Correlation: data can be modeled by a line with a _____________ slope

• Postive

• Negative

• 0

• Undefined

Negative Correlation: data can be modeled by a line with a ______________ slope

• Postive

• Negative

• 0

• Undefined

No Correlation: data ________________ be modeled by a line

• can

• can not

• of 0 nature can

• of undefined `nature can

Trend Line: models the relationship and is called a “__________________________”

• a correlation

• a causation

• Line of best fit

• Line of mediocrity

Strong correlation – data points ___________ to the trend line

• are closer

• are farther

• do not form

Weak correlation – data points _________________ from the trend line

• are closer

• are farther

• do not form

To form a trend line, choose the two points that are _____________ the trend line.

• closest to

• farthest from

• not on

After choosing to points to form the trend line, find the __________ and write an _______________

• distance, formula

• midpoint,equation

• slope, equation

• magnitude, formula

The trend line equation is used to __________

• Predict information not shown

• Give an exact answer that must be true