Scatterplots and Two Way Tables Review

Erika wanted to see if there was a relationship between how often someone eats fast food in a week and how the person gets to work each day. She conducted a survey where participants answered how often they eat fast food as well as whether they drive to work or use public transportation.

What is the relative frequency of participants who drive to work?

• 87%

• 50%

• 61%

• 55%

A survey explored the relationship between gender and band class. Which is a reasonable conclusion?

• There are more band members than non-band members

• There are more boys in the class than girls

• There are more boys in band than not in band

• More than half of the bands members in the class are girls

How many adults took this survey?

• 52

• 41

• 93

• 131

What percentage of girls have blonde hair?

• 30%

• 32%

• 29%

• 40%

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 140 pages. 

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 6 chapters. 

• 100 pages

• 170 pages

• 60 pages

• 20 pages

Use the line of best fit to approximate slope relative to the scatter plot above.

• 7/5

• 5/7

• -7/5

• -5/7

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170