BESC 3010 Practice Final Questions And
Answers Graded A+.
In a sample of women, the number of children that each woman has is an example of
which level of measurement?
A. nominal
B. ordinal
C. interval
D. ratio - correct answer.Ratio
Remember with ratio you can have an absolute zero of something.
Military ranks are an example of what level of measurement?
A. nominal
b. ordinal
C. interval
D. ratio - correct answer.ordinal; because one person has a higher rank than another
but doesn't specify which one is higher.
Gender is an example of what level of measurement?
a. nominal
b. ordinal
c. interval
d. ratio - correct answer.nominal; only indicates that people are in different groups
Which level would be most appropriate for describing the distribution below?
A. normal
B. platykurtic
C. positively skewed
D. negatively skewed - correct answer.positively skewed; extreme scores are at the
high end towards the positive numbers.
Which label would be most appropriate for describing the distribution below?
a. negatively skewed
b. leptokurtic
C. normal
D. biomodal - correct answer.normal
,Which of the following situations is the median an appropriate measure of central
tendency?
A. when the average is very high
B. when the mode is less than 10
C. the researcher has ordinal data
D. when the data set has an even number of scores - correct answer.The researcher
has ordinal data
Which of the following is not true about the normal distributions?
A. kurtosis = 1
B. Mean = Mode
C. Mode = Median
D. Skewness = 0 - correct answer.kurtosis = 1
The visual difference between bar graphs and histograms is that in _____ the bars
touch each other and in _____ the bars do not touch.
A. bar graphs, histograms
B. histograms, bar graphs
C. normal distributions, highly skewed distributions
D. none of the above - correct answer.Histograms, bar graphs
Compared to the normal distributions, a leptokurtic distribution has a ___ than a normal
distribution
A. rounder peak
B. more elongated tail
C. taller peak
D. flatter peak - correct answer.taller peak
If the dots on a scatter plot generally extend from the bottom left to the upper right of the
diagram but are very widely spread out, the researcher would report due to correlation
as:
A. strong and positive
B. strong and negative
C. weak and positive
D. weak and negative - correct answer.weak and positive (it goes up hill).
#12 The three measures of variability (how spread out things are) are:
A. mean, median, mode (location)
B. z-scores, effect size, independent variable
C. normal, bimodal, unimodal (shape)
D. range, variance, standard deviation - correct answer.D. range, variance, standard
deviation
-Remember that Variability are how spread-out they are.
(normal, bimodal, and Unimodal are shapes distribution)
(Mean, mean and Mode are common Central Tendency)
, #13 Which option is the mean of the numbers below?
4, 5, 4, 4, 3, 5, 6, 3, 4, 2
a. 10
b. 8
c. 4
d. 4.5 - correct answer.4
(to get the mean to add all the numbers and divided y the number of scores)
40 divided by 10
#14 Which option is the median of the numbers below?
4, 3, 4, 4, 3, 3, 6, 3, 4, 2
a. 3
b. 5
c. 4
d. 3.5 - correct answer.4
(put numbers in order to sort, go to the middle
(if you have an even number you average the score in the middle)
what is the mode of the numbers below?
4, 3, 4, 4, 3, 3, 6, 3, 4, 2 - correct answer.4
(what is the most frequently occurring number)
#16 what is the standard deviation of the sample represented by the numbers below?
4544356342
a. 3
b. 4.25
c. 3.5
d. 1. 15 - correct answer.1.15
First, find the mean. Then how far away each score is from the mean.
Need to use the sample formula (not population)
Step 1) Find mean -Mean is 4
Step 2) Subtract 4 from each number (these are the deviation scores)
Step 3) Square those scores (multiply the number by itself) These are now the squared
deviation from the mean
