Question

Consider an experiment where we're trying to determine how much water is needed to grow tomatoes. We have 16 pots with one tomato plant in each. We decide to try four different amounts of water (2 oz., 4, 6, 8). At the end of the study, the yield of tomatoes will be measured. Given no other information, what type of design is this?

		Completely Randomized Design
		Latin Square Design
		Completely Randomized Block Design
		Factorial Design

2. A response bias occurs when

		The population is undercovered
		Subjects don’t respond
		Subjects' responses were influenced
		The sample is not random

3. Imagine you've designed a survey. Which of the following questions will give you discrete data?

		What is your age?
		What is your sex?
		What is your pulse rate?
		How many times do you visit a doctor in a year?

Answer 1

1) Completely Randomized Design (since we are using only one factor with 4 levels)

2) Subjects' responses were influenced

3)

How many times do you visit a doctor in a year?

(since the variable can take only integer values)