biveriate data

What type of association does this graph have?

• positive

• negative

• none

• all of the above

What kind of trend is shown from this scatterplot?

• positive correlation

• negative correlation

• none

• cannot be determind

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive

A baseball coach graphs some data and finds the line of best fit. The equation for the line of best fit is

y hat= 0.32x - 20.51, where x is the number of times at bat and y is the number of hits.

How many hits should be expected from a player who is at bat 175 times?

• 35 hits

• 49 hits

• 609 hits

• 62 hits

Joe tracked the height of his Dalmatian puppy from age 13 weeks to 25 weeks. He graphed the data and determined the line of best fit is y hat= 1.12x + 28.78. What does the slope represent in this situation?

• The puppy weighed 28.78 pounds at age 13.

• For every week that goes by, the puppy gains 1.12 pounds.

• The puppy gains a pound every 1.12 weeks.

• The puppy weighs 1.12 pounds when it was born.

A veterinarian student tracks the weight of a kitten, in ounces, from the age of 0 to 32 weeks. She graphs the data and determines the line of best fit is y hat = 4.03x + 3.27. What does the y-intercept represent in this situation?

• The kitten weighs 3.27 ounces when it's born.

• The kitten weighs 4.03 ounces when it's born.

• The kitten gains 3.27 ounces a week.

• The kitten gains 4.03 ounces a week.

What type of correlation is shown in the scatter plot?

• Positive Linear Correlation

• Negative Linear Correlation

• Non-Linear Correlation

• No Correlation

What kind of trend is shown from this scatterplot?

• positive correlation

• negative correlation

• none

• cannot be determind

In a scatterplot, an outlier...

• ...is something we didn't learn in 8th grade

• ...is a point on the origin

• ...is a point that is far outside the main cluster of points/ordered pairs

• ...is a group of points that are close together

Describe the correlation in the graph shown.

• Strong Negative

• Strong Positive

• Weak Negative

• Weak Positive