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Unformatted text preview: Quiz i Note: It is recommended that you save your response as you complete each question. Question 1 (2 points} Q Which of the following is NOT a step in data collection? 0 the designation of a coding strategy
0 the construction of a data collection form
E the selection of a sample D entry onto the data collection form Question 2 (2 points) "' Which is a pitfall of using an optical scanner?
o it is accurate D it is fast a it is expensive D it can provide additional analysis of items Question 3 (2 points} What is the best code to use Iwhen ceding gender?
ﬂ 1,2 0 M,F 0 male, female 0 bar, girl Question 4 (2 points} Which of the following measures is NOT a measure of central tendency? G mean
G macle
G mass G meclian Question 5 (2 points} What is a another wayr to describe mean?
Ci variability Ci deviation a average score U test statistic Question 6 (2 points} What is another viral:r mode can be described? a occurs most frequentlyr
G tells how much variabilitiJlr there is in the test scores
G divides the sample in half a averages the test scores Question If (2 points} 9 Which of the following is NOT a measure of the degree of spread or dispersion of
scores? 0 range
0 variance
0 standard deviation a mode Question 8 (2 points} which measure of central tendencyr provides the most information? 0 mode
0 median
a mean 0 midpoint Question 9 (2 points} B How can descriptive statistics be deﬁned? 0 relating the data to a larger population
ﬂ describing elements of a distribution 0 identical to inferential statistics 0 developing a research question Question 10 {2 points) H In a normal distribution, what percentage of scores fall between the mean and a
z—score of +1.1]l]? D 5D%
D 95%
a 34% D 1E% Question 11 {2 points) Q What is another phrase used to describe a bell—shaped curve? C} regular—shaped curve
C} elliptical curve
a normal curve 0 average EU WE! Question 12 (2 points) E which is the best measure of central tendencyr to use when working with ordinal
data? c: range
a median
d mode Cl mean Question 13 (2 points) B When you have internal or ratio clata [such as age in years}, what is typically the
best measure of central tendency? 0 range
o mocle
a mean o median Question 14 {2 points) 9 What is rejecting the null hypothesis when it is true? G correct
G Type II error
G Type I error G Type III error Question 15 {2 points) B What is the statistical test for examining the signiﬁcant difference between two
means from two unrelated groups? G t—test for dependent means
a t—test for independent means
o factor analysis Ci MNDUA Question 16 (2 points) I What technique reduces the number of variables in a construct?
D MANDUA D t—test a factor analysis cw effect size Question 1? {2 points) What is the crucial element in making an accurate inference? o cloing a goocl literature review
o statistical software
o being well versecl in multivariate statistical proceclures a obtaining a representative sample of the population Question 18 (2 points) Which of the following states that regarclless of the shape of a population, the
means of all the samples selectecl will be normallv distributed? a central limit theorem
o factor analvsis
o Tvpe II Error o Tvpe I Error Question 19 (2 points) E
Meaningfulness is better than signiﬁcance. a True
G False Question 20 (2 points) B One of the keys to successful operation of the central limit theorem is that the
sample size must be if) greater than 41]
if) greater than Si]
a greater than 3] ID less than 21] Question 21 (2 points) E If Helen mistakenly accepts her null hypothesis when it shoulcl he rejected, what
has occurred? a Type II error
C: Type III Error
G researcher bias 0 Type I error Question 22 (2 points) How can Tvpe II errors he reduced?
0 select a heterogeneous population
0 select a homogeneous population
a increasing sample size 0 decreasing sample size Question 23 {2 points) The critical value is G the value needed to determine the reliahilitvr of a studv
G the value need to determine the validity of a studv G the value found after calculating a test statistic a the valued needed to reject the null hvpothesis Question 24 (2 points) The critical value decreases when 3' the sample size decreases
*3 the sample is homogeneous
*3 the sample size increases *3 the sample is heterogeneous Question 25 (2 points) In order to determine the critical value, which two pieces of information are
needed? if) degrees of freedom and variance
G mean and sample size
if) mean and standard deviation a degrees of freedom and level of signiﬁcance Overall Grade (highest attempt}: 48 3' 5] ...
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 Fall '17

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