Explanation for Linear Models and Mean,Median and Mode

The equation y = 2x + 5 models the number of mosquito bites a soccer player gets every five minutes on our practice field. Which sentence correctly interprets the slope in context.

• The player gets 2 mosquito bites every minute.

• The player gets to play 5 minutes every time they get 2 mosquito bites.

• The player gets 2 mosquito bites every 5 minutes.

• The player gets to play 1 minute for every 2 mosquito bites they get.

The median price of a new cell phone at Phones R Us is $243. Which sentence below correctly interprets the median price?

• Half the phones at Phones R Us cost more than $243.

• On average, the phones at Phones R Us cost $243.

• Typically the phones at Phones R Us cost $243 away from the median.

The equation y = 2x + 5 models the number of mosquito bites a soccer player gets every five minutes on our practice field. Which sentence correctly interprets the y-intercept in context.

• The player gets 2 mosquito bites every minute.

• The player had 5 mosquito bites at the beginning of practice.

• The player had 2 mosquito bites at the beginning of practice.

• The player gets 5 mosquito bites every minute.

The mean price of a new cell phone at Phones R Us is $243. Which sentence below correctly interprets the mean price?

• Half the phones at Phones R Us cost more than $243.

• On average, the phones at Phones R Us cost $243.

• Typically the phones at Phones R Us cost $243 away from the mean.

The standard deviation of cell phone prices at Phones R Us is $22.50. Which sentence below correctly interprets the standard deviation?

• Half the phones at Phones R Us cost more than $22.50.

• On average, the phones at Phones R Us cost $22.50.

• Typically the phones at Phones R Us cost $22,50 away from the mean..

The median price for a snowboard at Middletown Snowboards is $358. Which sentence below correctly represents this value?

• Half the snowboards cost less than $358.

• Typically the snowboards vary from the median by $358.

• On average, the snowboards cost $358.

The mean price for a snowboard at Middletown Snowboards is $375. Which sentence below correctly represents this value?

• Half the snowboards cost less than $375.

• Typically the snowboards vary from the mean by $375.

• On average, the snowboards cost $375.

The standard deviation for prices of snowboards at Middletown Snowboards is $78.25. Which sentence below correctly represents this value?

• Half the snowboards cost less than $78.25.

• Typically the snowboards vary from the mean by $78,25.

• On average, the snowboards cost $78,25.

The equation y = -.57x + 73 represents the student's grade in Math 1 class for every absence in a six weeks. Which sentence below correctly interprets the slope of this linear regression?

• The student's grade goes up .57 points for every absence.

• The student's grade was 73 for the six weeks.

• The student's grade went down 73 points after every absence.

• The student's grade drops .57 points for every absence.

The equation y = -.57x + 73 represents the student's grade in Math 1 class for every absence in a six weeks. Which sentence below correctly interprets the y-intercept of this linear regression?

• The student's grade goes up .57 points for every absence.

• The student's grade was 73 for the six weeks.

• The student's grade went down 73 points after every absence.

• The student's grade drops .57 points for every absence.