Question

A researcher asks participants to estimate the calories they consume in a meal. The researcher records the following estimates: 450, 426, 310, 500, and 220. If the researcher removes the estimate of 220 (perhaps because the participant drops out of the study), then the value of the mean will_________________________

Answer 1

The value of the mean will increase

Step-by-step explanation:

A researcher asks participants to estimate the calories they consume in a meal. The researcher records the following estimates: 450, 426, 310, 500, and 220. If the researcher removes the estimate of 220 (perhaps because the participant drops out of the study), then the value of the mean will increase.

The working below shows that once 220 is removed from the consideration, the mean will increase;

With 220 in consideration:

(450+426+310+500+220)/5

mean = 381.2

Without 220 in consideration:

(450+426+310+500)/4

mean = 421.5