Scatter Plots and Trend Lines

The age of a kitten and its weight.

• positive association
• negative association
• no association

Tags

TEKS.MATH.A.3B

Which scatter plot shows a linear relationship between x and y?

• Graph A
• Graph B
• Graph C
• Graph D

Tags

TEKS.MATH.8.5C

What is the type of association?

• Negative 
• no association
• positive 

Tags

TEKS.MATH.A.3B

What type of association does this graph have?

• positive
• negative
• none
• all of the above

What type of association does this scatter plot represent?

• positive linear association
• negative association
• no association
• nonlinear association

Tags

TEKS.MATH.8.5C

The height of students and their scores on a test.

• positive correlation
• negative correlation
• no correlation

Tags

TEKS.MATH.A.3B

The number of notebooks bought and the total cost.

• positive association
• negative association
• no association

Tags

TEKS.MATH.A.3B

If a scatterplot has no correlation then...

• ...it has no ordered pairs
• ...it has ordered pairs that have a negative pattern
• ...its ordered pairs have no predictable pattern
• ...if it makes a lion on a graph (roar!)

Are there any outliers?

• Yes, (45, 8).

• Yes, (40, 1).

• No.

Answer explanation

(45, 8) is an outlier because the point goes against the general negative pattern formed by the rest of the data.

Most students missed fewer questions the more they studied. However, this student studied a lot and missed a lot of questions.

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside.  Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8,300
• 8
• 7,300
• 9,300