QUESTION 2

Age is classified as:

	A.	nominal data
	B.	ordinal data
	C.	interval data
	D.	ratio data

0.33 points

QUESTION 3

What is a random sample?

	A.	A set of items drawn from a population, where each item in the population has an equal chance of ending up in the sample.
	B.	A set of items drawn from a population, where some items are more likely than others to end up in the sample
	C.	A set of items drawn from a population, where each item in the population has a random chance of ending up in the sample
	D.	A set of items drawn from a population on an ad hoc, unstructured, basis

0.333 points

QUESTION 4

Which of the following definitions is the definition of the MEDIAN?

	A.	The MEDIAN is the value that has the highest frequency in a data set.
	B.	The MEDIAN is the value that half of the entries are below and half of the entries are above in a data set (the middle number)
	C.	The MEDIAN is the largest value in a data set.
	D.	The MEDIAN is the average calculated by adding up all the values and dividing by the number of entries.

0.333 points

QUESTION 5

If you graph a normally distributed set of data (one without obvious irregularities or biases, such as the height of all people in your school), what will the shape of that graph be?

	A.	J-Curve
	B.	Bell Curve
	C.	Sloping Upwards
	D.	Flat

0.333 points

QUESTION 6

What is the median of the following set of numbers?{12,8,13,4,7,6,3,3,15}

	A.	12
	B.	7.5
	C.	7
	D.	8

0.333 points

QUESTION 7

What are the mode and the mean for the following set of numbers?{4, 9, 8, 2, 16, 4, 4, 8 ,9, 6}

	A.	Mean = 7, mode =8
	B.	Mean = 7, mode =4
	C.	Mean = 6, mode =8
	D.	Mean = 8, mode =9

0.333 points

QUESTION 8

The following statement is an example of a null hypothesis.

There is no statistically significant relationship between the type of water I feed the flowers and growth of the flowers.

True

False

0.333 points

QUESTION 9

When asked questions concerning personal hygiene, people commonly do not tell the truth.

	A.	Sampling bias
	B.	Confounding
	C.	Non-response bias
	D.	Response bias

0.333 points

QUESTION 10

Gender is categorized as:

	A.	Nominal Data
	B.	Ordinal Data
	C.	Ratio Data
	D.	Interval Data

0.333 points

QUESTION 11

What is the main difference between probability and non-probability sampling?

	A.	Probability sampling involves the need for the computation of a sample via certain equations
	B.	Non-probability sampling is preferred in qualitative research
	C.	Randomization is involved in probability sampling
	D.	Non-probability sampling is more appropriate for interviews

0.333 points

QUESTION 12

You areconducting a survey of the people of the UnitedStatesto find out how popular the racket sports are. You randomly choose people to call and make 1,000 phone calls to people scattered across the country. In this study, what is the statistics term for THE PEOPLE IN THE U.S, and what is the statistics term for THE PEOPLE YOU CALLED?

	A.	Both the people of the U.S. and the people you called are POPULATIONS.
	B.	The people of the U.S. are the POPULATION, and the people you called are the SAMPLE.
	C.	The people of the U.S. are the SAMPLE, and the people you called are the POPULATION
	D.	Both the people of the U.S. and the people you called are SAMPLES

0.34 points

QUESTION 13

You are interested in how stress affects heart rate in humans. Your dependent variable would be the _____.

	A.	Interest
	B.	Humans
	C.	Stress
	D.	Heart Rate

0.334 points

QUESTION 14

Which of the following is an example of a non-probability sampling technique?

	A.	Clustered Random
	B.	Systematic Sampling
	C.	Stratified Random
	D.	Snowball

0.333 points

QUESTION 15

You areconducting a study to see whether a new experimental medication will cause bald men to grow hair. You divide your patientsinto two groups. To one group, you give the medication. To the other group, you give a placebo. In this study, the correct terms for the taking of the drug and the growth of hair are the following.

	A.	Both the medication and the hair growth are dependent variables.
	B.	Both the medication and the hair growth are independent variables.
	C.	The medication is the dependent variable, and the hair growth is the independent variable.
	D.	The medication is the independent variable, and the hair growth is the dependent variable.

0.333 points