QUESTION 1

1. A characteristic that varies from one person or thing to another is called a:

	a.	Interpretation
	b.	Variable
	c.	Grouping
	d.	Data point

QUESTION 2

1. A health nurse kept track of the number of pamphlets on infant nutrition given out each week over a seven week period. The results are shown below:

Find the median for the given sample data

85, 15, 214, 168, 292, 237, 235

	a.	214
	b.	178
	c.	168
	d.	235

QUESTION 3

1. A health researcher used the following data set showing the weight in pounds gained or lost by a sample of eight laboratory animals given a drug.

8.1	-7.0	2.0	3.0
-2.4	2.2	5.5	-5.3

2. Determine n,x_iand x

	a.	n = 8,xi= 6.1 and x = 0.76
	b.	n = 8,xi= 6.1 and x = 0.87
	c.	n = 7,xi= 6.1 and x = 0.76
	d.	n = 7,xi= 6.1 and x = 0.87

QUESTION 4

1. A local nursing student gathered the following data regarding the price, in dollars, of a regular first aid kit at twelve competing pharmacies. Find the range for the given data set.

32.95	24.95	26.95	28.95
18.95	28.95	30.95	22.95
24.95	26.95	29.95	28.95

	a.	$12
	b.	$14
	c.	$10
	d.	$8

QUESTION 5

1. A medical journal publisher mails a survey to every subscriber asking about the quality of subscription service. The total number of subscribers represents the:

	a.	Population
	b.	Sample

QUESTION 7

A store manager wishes to determine whether his customers would be prepared to pay a little extra for organic produce. He uses a random number table to choose 50 random numbers between 1 and 200. He stands outside the store on a Monday morning between 9:00 am and 12:00 noon and interviews the people corresponding to the random numbers. For example random number 82 would correspond to the 82nd person to arrive. Do you think that the sample obtained in this way will be representative of all the stores customers?

QUESTION 8

1. An education researcher was interested in examining the effect of the teaching method and the effect of the particular teacher on students scores on a math test. In a study, there are four different teachers (1, 2, 3, 4), and three different teach methods (A, B, C). The number of students participating in the study is 266. Students are randomly assigned to a teaching method and teacher.

Identify the response variable.

	a.	Methods A, B and C
	b.	Score on the math test
	c.	Teaching method
	d.	Teacher
	e.	None of the above

QUESTION 9

1. At one hospital in 1992, 674 women were diagnosed with breast cancer. Five years later, 88% of the Caucasian women and 83% of the Asian women were still alive. Is this a designed experiment or observational study?

	a.	Observational Study
	b.	Designed Experiment

QUESTION 10

1. Find the mean of the given sample data. The local salary of paramedics in the last two weeks.

$ 3,648.93	$ 4,116.87	$ 2,609.40	$ 2,176.20
$ 4,025.26	$ 3,158.70	$ 2,837.88
$ 2,735.46	$ 1,933.28	$ 1,660.52
	a.	$3211.39
	b.	$2890.25
	c.	$2884.25
	d.	$3612.81

QUESTION 11

1. In a clinical trial, 600 participants suffering from high blood pressure were randomly assigned to one of three groups. Over a one month period, the first group received a low dosage of an experimental drug, the second group received a high dosage of the drug, and the third group received a placebo. The diastolic blood pressure of each participant was measured at the beginning and the end of the period and the change in blood pressure recorded.

Identify the experimental units (subjects).

	a.	The three different groups
	b.	The diastolic blood pressures of the patients
	c.	The treatment (i.e., placebo, low dosage, or high dosage of the drug)
	d.	The participants in the experiment

QUESTION 12

1. From a group of 496 students, every 49th student starting with the 3rd student is selected.Identify the type of sampling used in this example.

	a.	Systematic random sampling
	b.	Stratified sampling
	c.	Cluster sampling
	d.	Simple random sampling

QUESTION 13

1. Human blood type (A, B, AB, or O) is an example of which type of data

	a.	Qualitative Data
	b.	Quantitative Data

QUESTION 15

In a right-skewed data set,the median is ___[a]___than the mean.

QUESTION 16

Scores on a test have a mean of 70 and a standard deviation of 8. One student has a score of 78.

1. Convert this score to a z-score (show your work)
2. Why might it be more useful to see a z-score rather than a test score when looking at data from a whole class?

QUESTION 17

Stratified random sampling is:

	a.	When a population is divided into sub populations and sampling is conducted from each of these
	b.	When a population is divided into groups or clusters and sampling is conducted from each cluster
	c.	When a population is divided into groups and each group is further divided into equal, homogenous parts and sampled using a random number table
	d.	When a population is divided by the sample size and the a random number table helps choose numbers

QUESTION 18

The average paramedic achievement scores for students at post secondary institutions in Canada are presented below.

606 588587 586 582 578 561 555550

548542540537537534532530528

Which of the following lists (ordered: min, Q1, median, Q3, max) is the correct five number summary.

	a.	528, 537, 548, 578, 606
	b.	528, 537, 549, 582, 606
	c.	528, 537, 550, 582, 606
	d.	528, 537, 548, 581, 606

QUESTION 19

The average weight of ICU patients in any given day is an example of which type of data:

	a.	Qualitative Data
	b.	Quantitative Data

QUESTION 20

The branch of statistics that consists of methods of organizing and summarizing information into graphs, charts, tables and so on, is referred to as:

	a.	Inferential Statistics
	b.	Descriptive Statistics
	c.	Population Statistics
	d.	Qualitative Statistics

QUESTION 21

The collection of all individuals or items under consideration in a statistical study is referred to as the:

	a.	Population
	b.	Sample
	c.	Inference
	d.	Description

QUESTION 22

The data in the following table show the results of a survey of medical patients asking which doctors office they would choose given the eight choices shown. Determine the value that should be entered in the relative frequency column for Dr. Leos.

Office	Frequency	Relative Frequency
Dr. Scout	26
Dr. Leos	95
Dr. Ross	18
Dr. Gilly	21
Dr. Juliannas	6
Dr. Sharona	20
Dr. Emarf	8
Dr. Barlow	6
	a.	0.0475
	b.	0.475
	c.	0.95
	d.	95

QUESTION 23

The following table shows the heights of the five tallest mountains in North America. What kind of data is given in the second column of the table?

Mountain	Height (ft)	Rank
McKinley	20,320	1
Logan	19,580	2
Citlatepec	18,700	3
St. Elias	18,008	4
Popocatepetl	17,887	5
	a.	Qualitative
	b.	Discrete
	c.	Continuous
	d.	Categorical

QUESTION 24

The manager of an athletic team measured the length of the leftover rolls of athletic tape after a season, they are listed below, in meters. Find the sample standard deviation.

0.566, 0.807, 0.365, 0.244, 0.436, 0.571, 0.125

	a.	0.4449 m
	b.	3.1140 m
	c.	0.4360 m
	d.	0.2276 m

QUESTION 25

The number of child patients that are triaged in the emergency room on a given weekend is an example of which type of data:

	a.	Quantitative, Continuous
	b.	Qualitative, Categorical
	c.	Quantitative, Discrete
	d.	Qualitative, Discrete

QUESTION 26

The salaries of 10 randomly selected college instructors are show below.

$21,000, $76,000, $102,000, $129,000, $44,500, $106,500, $124,000, $116,000, $93,000, $88,500

Find the median for the given salaries.

	a.	$90,500
	b.	$72,000
	c.	$97,500
	d.	$87,500

QUESTION 27

The table below shows the average income by age group for the residents of one town in the year 1998. The average incomes for each age group are estimates based on a sample of size 100 from each group.Is this study descriptive or inferential?

Age Group	Average Income
18-24	$17,180
25-39	$26,661
40-54	$32,471
55-70	$25,960
Over 70	$18,241
	a.	Descriptive
	b.	Inferential

QUESTION 28

The table shows the country represented by the winner of the 10 km run in the Summer Olympic Games in various years. Find the mode(s) of the given sample data.

Year	Country
1912	Finland
1920	Finland
1924	Finland
1928	Finland
1932	Poland
1936	Finland
1948	Czechoslovakia
1952	Czechoslovakia
1956	USSR
1960	USSR
1964	United States
1968	Kenya
1972	Finland
1976	Finland
1980	Ethiopia
1984	Italy
1988	Morocco
1992	Morocco
	a.	1912
	b.	Morocco
	c.	7
	d.	Finland
	e.	none of the above

QUESTION 29

The weekly salaries (in dollars) of 16 research lab technicians are listed below. Find the first quartile, Q1

680	571	713	652
718	563	489	635
519	680	688	465
555	787	596	726
	a.	$525.25
	b.	$643.50
	c.	$495.75
	d.	$559.00

QUESTION 30

True or false? In simple random sampling, each possible sample is equally likely to be the obtained.

	a.	True
	b.	False

QUESTION 31

Uselimit groupingto organize these data into a frequency distribution. A medical research team studied the ages of patients who had strokes caused by stress. The ages of 24 patients who suffered gallstones were as follows.

31	32	38	43	47	52	59	63
62	40	38	49	42	34	60	48
63	58	47	48	64	38	40	42

1. Construct a frequency distribution for these ages. Use 4 Classes beginning with a lower class limit of 30 and class width of 10.

Age Group

Frequency

QUESTION 33

When investigating wait times in walk in clinics the following results (in minutes) were obtained.

Clinic A	120	123	153	128	124	118	154	110
Clinic B	115	126	147	156	118	110	145	137

2. Find the range and standard deviation for each of the two samples, then compare the two sets of results

a.

Both measures indicate there is more variation in the data for clinic B

Clinic A	44	16.2
Clinic B	46	16.9

b.

It is inconclusive at to which data set has more variation

Clinic A	26	16.2
Clinic B	44	16.9

c.

Both measures indicate there is more variation in the data for clinic A

Clinic A	43	16.9
Clinic B	67	16.9

QUESTION 37

You are working for Canadian Blood Services and have taken blood donations from 40 individuals. In your notes, you have kept a table of the patient's blood type but your supervisor wants a quick summary of the information.

O	A	A	O	O	AB	O	B	A	O
A	O	A	B	O	O	O	AB	A	A
A	B	O	A	A	O	O	B	O	O
O	A	O	O	A	B	O	O	A	AB

2. Construct a frequency and relative frequency distribution of the data.

Blood Type	Frequency	Relative Frequency
AB
A
B
O
Sum	40	1