1.Identify the source(s) of bias in the following scenarios/questions (there may be more than one source of bias in some of the scenarios/questions below). Give reasons for your choice(s). Where applicable, re-write the question to remove the bias.

A.A survey asks every other shopper at a local grocery store if they would prefer to buy groceries online. Less than half agree to complete the questionnaire.

B.Why does chocolate A taste better than chocolate B?

2.Data collected on a person's monthly expenses on eating in restaurants and monthly net income are collected and shown below.

4. The following are the entrance exam scores (percentages) of 15 randomly chosen students: 65 81 55 90 85 95 77 62 89 83 74 83 62 68 83 a. Calculate the mean, median and mode of the 15 scores. Round answers to the nearest whole number if applicable. b. Calculate the range of the scores. c. Determine the first, second and third quartiles. d. Calculate the percentile rank of a person who has a score of 62%. e. What is the score of a person who is in the 80th percentile of the data? 6. Seven out of every nine people do not floss regularly. o Identify what piece(s) of information is missing. o Assume the cited statistic is valid. Applying this statistic to a group of 270, calculate the number of people who do floss regularly.Eating in Monthly net Eating in Monthly net restaurants ($) income restaurants ($) income ($) ($) 50 1200 60 1400 20 1050 70 1500 100 1500 40 1200 80 1100 55 1300 75 1350 35 1450 55 1200 65 1450 90 1400 30 1150 30 1150 20 1100 25 1100 90 1550 a. Identify each variable as discrete or continuous. b. Pose a question that would require single-variable analysis