Lynn Byrd, Greg Byrd and, Chris Pearce Solutions for Chapter: Collecting Data, Exercise 4: Check your progress

You are describing a person. Give an example of something about a person that is

$\left(a\right)$ Discrete data $\left(b\right)$ Continuous data $\left(c\right)$ categorical data

A restaurant manager asks customers to fill in an online questionnaire after they have had a meal. Write down two possible predictions the restaurant could test. Here, one question from questionnaire: The customer replies by choosing from one to five stars. 'Were the staff polite and helpful'?.

A restaurant manager asks customers to fill in an online questionnaire after they have had a meal. Write down two possible predictions the restaurant could test. Why is this a good way to collect the data?

A restaurant manager asks customers to fill in an online questionnaire after they have had a meal. Write down two possible predictions the restaurant could test. You have the results of this question from $65$ customers. How can you analyse the results?

A gym manager interviews some members to investigate how they use the gym. The manager interviews $10$ members. Explain why this sample is too small.

A gym manager interviews some members to investigate how they use the gym. What are the disadvantages of interviewing everyone who uses the gym?

A gym manager interviews some members to investigate how they use the gym. How could the manager choose a sample of $50$ members to interview?

A gym manager interviews some members to investigate how they use the gym. State the two ways of giving out a questionnaire to the chosen members.