Question

Question 1 Which of the following would be considered the most conservative alpha level? 0.01 0.05 0.10 0.15 Question 2 The generally preferred measure of central tendency is usually the range mean standard deviation median Question 3 The __ maintains that two conditions do not differ. experimental hypothesis level of confidence law of effect null hypothesis Question 4 The is used to analyze the results when there are more than two groups. t-test z-test analysis of variance none of the above Question 5 If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will have a z score (or standard score) of 1.00 0.00 2.00 -2.00 Question 6 Inferential statistics allow you to decide whether a difference between the experimental and the control group is due to _ or ____. manipulation; chance manipulation; experimental error sampling error; independent variable independent variable; experimental error Question 7 The two properties about a set of measurements of a dependent variable that we are most interested in describing are: frequency and average. average and correlation. central tendency and dispersion. histograms and polygons. Question 8 What are inferential statistics used for? summarize the mean and standard deviation of the data estimate if differences between groups are by chance describe the data from 2 unrelated groups describe the relationship within a set of data Question 9 A _ is a complete set of measurements. sample population random sampling parameter Question 10 The __ is the sum of all the scores divided by the number of scores. median mean mode standard deviation Question 11 The standard deviation is the square of the variance. the square root of the variance. smaller than the mean. the difference between the highest and lowest scores. Question 12 The number of participants in a study is denoted by s. n. z. r. Question 13 Two-tailed tests are _ conservative and __ powerful than one-tailed tests. less; less less; more more; less more; more Question 14 The _ indicates the number of scores that are free to vary. U degrees of freedom magnitude of effect point biserial Question 15 Simple analysis of variance is used in designs having one independent variable more than one independent variable more than one independent variable (IV) but less than four IVs more than one dependent variable Question 16 The null hypothesis suggests that the two samples come from _ distribution(s), and the experimental hypothesis suggests that the two samples come from _ distribution(s). different; different different; the same the same; different the same; the same Question 17 A conservative statistical test is one that minimizes both Type I and Type II errors. minimizes Type I errors, but increases the chance of Type II errors. minimizes Type II errors, but increases the chance of Type I errors. increases the chance of both Type I and II errors. Question 18 Which of the following is not a characteristic of the normal curve: bell-shaped represents 100% of the scores under the curve 100 is at the center allows us to determine rank Question 19 If we conduct an experiment on average young, white, college males, inferential statistics allow us to generalize to the population of average young, white, college males. college male students. college students. young adults. Question 20 Which of the following is the most useful descriptive statistic for measuring dispersion? range variance mean deviation standard deviation Question 21 If we apply an alpha level of 0.05, and there really is no effect of the experimental manipulation, then one should make a Type I error 5% of the time. 10% of the time. 15% of the time. 95% of the time. Question 22 _____ is one way of ensuring that a sample is representative of the population. The two-tailed test The between-subjects design The sign test Random sampling Question 23 Descriptive statistics are used to: compare the significance of the difference between 2 data sets test the difference between the means describe the observations describe the type one error in an experiment Question 24 The prediction that alcohol slows reaction time is nondirectional. directional. semidirectional. partially directional. Question 25 The power of a statistical test refers to its ability to reject false null hypotheses. reject false experimental hypotheses. reject true null hypotheses. reject true experimental hypotheses.

Question 1
Which of the following would be considered the most conservative alpha level?
0.01
0.05
0.10
0.15

Question 2
The generally preferred measure of central tendency is usually the
range
mean
standard deviation
median

Question 3
The __________ maintains that two conditions do not differ.
experimental hypothesis
level of confidence
law of effect
null hypothesis

Question 4
The ____________ is used to analyze the results when there are more than two groups.
t-test
z-test
analysis of variance
none of the above

Question 5
If the mean I.Q. is 100 and the standard deviation of I.Q. scores is 15, then an I.Q. of 130 will have a z score (or standard score) of
1.00
0.00
2.00
-2.00

Question 6
Inferential statistics allow you to decide whether a difference between the experimental and the control group is due to _______________ or ________________.
manipulation; chance
manipulation; experimental error
sampling error; independent variable
independent variable; experimental error

Question 7
The two properties about a set of measurements of a dependent variable that we are most interested in describing are:
frequency and average.
average and correlation.
central tendency and dispersion.
histograms and polygons.

Question 8
What are inferential statistics used for?
summarize the mean and standard deviation of the data
estimate if differences between groups are by chance
describe the data from 2 unrelated groups
describe the relationship within a set of data

Question 9
A _____________ is a complete set of measurements.
sample
population
random sampling
parameter

Question 10
The ________________ is the sum of all the scores divided by the number of scores.
median
mean
mode
standard deviation

Question 11
The standard deviation is
the square of the variance.
the square root of the variance.
smaller than the mean.
the difference between the highest and lowest scores.

Question 12
The number of participants in a study is denoted by
s.
n.
z.
r.

Question 13
Two-tailed tests are _______________ conservative and ______________ powerful than one-tailed tests.
less; less
less; more
more; less
more; more

Question 14
The _____________ indicates the number of scores that are free to vary.
U
degrees of freedom
magnitude of effect
point biserial

Question 15
Simple analysis of variance is used in designs having
one independent variable
more than one independent variable
more than one independent variable (IV) but less than four IVs
more than one dependent variable

Question 16
The null hypothesis suggests that the two samples come from ___________ distribution(s), and the experimental hypothesis suggests that the two samples come from _____________ distribution(s).
different; different
different; the same
the same; different
the same; the same

Question 17
A conservative statistical test is one that
minimizes both Type I and Type II errors.
minimizes Type I errors, but increases the chance of Type II errors.
minimizes Type II errors, but increases the chance of Type I errors.
increases the chance of both Type I and II errors.

Question 18
Which of the following is not a characteristic of the normal curve:
bell-shaped
represents 100% of the scores under the curve
100 is at the center
allows us to determine rank

Question 19
If we conduct an experiment on average young, white, college males, inferential statistics allow us to generalize to the population of
average young, white, college males.
college male students.
college students.
young adults.

Question 20
Which of the following is the most useful descriptive statistic for measuring dispersion?
range
variance
mean deviation
standard deviation

Question 21
If we apply an alpha level of 0.05, and there really is no effect of the experimental manipulation, then one should make a Type I error
5% of the time.
10% of the time.
15% of the time.
95% of the time.

Question 22
_____________ is one way of ensuring that a sample is representative of the population.
The two-tailed test
The between-subjects design
The sign test
Random sampling

Question 23
Descriptive statistics are used to:
compare the significance of the difference between 2 data sets
test the difference between the means
describe the observations
describe the type one error in an experiment

Question 24
The prediction that alcohol slows reaction time is
nondirectional.
directional.
semidirectional.
partially directional.

Question 25
The power of a statistical test refers to its ability to
reject false null hypotheses.
reject false experimental hypotheses.
reject true null hypotheses.
reject true experimental hypotheses.

Added by Theresa S.

Question

Please give Ace some feedback