1. Quantitative Research: Central Tendency Question

Sarah, a server at a local restaurant in Castlegar, wants to know whether she could increase her tips by including a positive message on her billsto customers. She randomly selected 22 biils on which she wrote "Have a Great Day!" On her other 24 bills, she did not write anything.

The tip percentages are as follows:

Have a great day! (N = 22 bils) 17% 28% 41% 33% 27% 44% 22% 24% 65% 27% 34% 72% 25% 47% 21% 30% 33% 29% 40% 21% 24% 23%

No message (N = 24 bills) 45% 21% 27% 34% 34% 25% 31% 28% 21% 36% 31% 30% 20% 39% 8% 22% 23% 30% 28% 18% 28% 33% 27% 28%

Questions:

1. Determine the mode for both sets of bills.

2. Determine the median for both sets of bills.

3. Compute the mean for both sets of bill.

Analysis and Findings Exercise Based on the data posted above, answer the following questions.

Questions:

1. Which measure of central tendency (mode, median, or mean) best represents the central tendency of both sets of bills. Justify your answer.

2. What will you tell Sarah about the effect of writing "Have a great day!" on the bill?