The sterplot shows the temperature y , in ° F , recorded by a meteorologist at various times x ,

Question

The sterplot shows the temperature y , in &#176; F , recorded by a meteorologist at various times x , in days since June 1 . The sterplot has 7 data points. The data points are in a linear pattern trending approximately horizontally. The data points have the following coordinates: (1 comma 69) (2 comma 60) (3 comma 73) (4 comma 67) (5 comma 64) (6 comma 62) (7 comma 65) During which of the following time periods did the greatest increase in recorded temperature take place?

Accepted Answer

Choice C is correct. The sterplot shows that there was an increase in recorded temperature from x = 2 to x = 3 and from x = 6 to x = 7 . When x = 2 , the recorded temperature was approximately 60 &#176; F and when x = 3 , the recorded temperature was greater than 70 &#176; F . This means that the increase in recorded temperature from x = 2 to x = 3 was greater than ( 70 - 60 ) &#176; F , or 10 &#176; F . When x = 6 , the recorded temperature was greater than 60 &#176; F and when x = 7 , the recorded temperature was less than 70 &#176; F . This means that the increase in recorded temperature from x = 6 to x = 7 was less than ( 70 - 60 ) &#176; F , or 10 &#176; F . It follows that the greatest increase in recorded temperature took place from x = 2 to x = 3 . Choice A is incorrect. The increase in recorded temperature from x = 6 to x = 7 was less than the increase in recorded temperature from x = 2 to x = 3 . Choice B is incorrect. From x = 5 to x = 6 , a decrease, not an increase, in recorded temperature took place. Choice D is incorrect. From x = 1 to x = 2 , a decrease, not an increase, in recorded temperature took place.

Question the-st