Basic Statistics
Exam Bank
Course Introduction
Basic Statistics introduces students to the fundamental concepts and methods used to collect, analyze, interpret, and present data. The course covers topics such as descriptive statistics, probability theory, random variables, sampling distributions, estimation, hypothesis testing, correlation, and regression. Emphasis is placed on practical applications and interpretation of statistical results, enabling students to make informed decisions based on data. Skills learned in this course provide a foundation for further study in statistics and are applicable across a wide range of academic disciplines and real-world scenarios.
Recommended Textbook
Statistics A Gentle Introduction 3rd Edition by Frederick L. Coolidge
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16 Chapters
341 Verified Questions
341 Flashcards
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Page 2
Chapter 1: A Gentle Introduction
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) The capital Greek letter \(\Sigma\)indicates that the reader should _______ a set of numbers.
A)add
B)subtract
C)multiply
D)divide
E)calculate
Answer: A
Q2) Who wrote that "not [ever] being wrong" was even worse than being wrong in science?
A)Nightingale
B)Pauli
C)Prusiner
D)Abelson
Answer: B
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Page 3
Chapter 2: Descriptive Statistics: Understanding
Distributions of Numbers
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25 Flashcards
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Sample Questions
Q1) How many graphs and tables did the rocket manufacturers prepare to convince NASA that the seals in the Space Shuttle Challenger might fail in cold weather?
A)1
B)2
C)13
D)25
Answer: C
Q2) Who used the word statistics in the English language as a method of determining a country's inhabitants' happiness?
A)De Moivre
B)Sinclair
C)Gauss
D)Galton
Answer: B
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Page 4
Chapter 3: Statistical Parameters: Measures of Central
Tendency and Variation
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Sample Questions
Q1) What is the mean of the salaries (rounded to a whole number)?
A)81,000
B)81,143
C)88,000
D)14,864
Answer: B
Q2) What is the standard deviation of the salaries (rounded to a whole number)?
A)81,000
B)81,111
C)88,000
D)14,701
Answer: D
Q3) The top salary in the previous set was $115,000.Would you consider that salary A)a klinker
B)an outlier
C)neither because it falls well within three standard deviations of the mean
Answer: C
Page 5
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Chapter 4: Standard Scores, the Z Distribution, and
Hypothesis Testing
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Sample Questions
Q1) According to the z distribution, what proportion of SAT verbal scores falls between 500 and 600?
A).3413
B).2500
C).5000
D).7500
Q2) To create a single standard score, one must take any number in a set of numbers and ___________ the mean of the set of numbers and ___________ by the standard deviation of those numbers.
A)add; divide
B)subtract; add C)subtract; divide D)add; multiply
Q3) From what negative z score to what positive z score would cut off the middle .9500 of the z distribution?
A)± 1.64
B)± 1.96
C)± 2.00
D)± 1.00
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Chapter 5: Inferential Statistics: The Controlled Experiment,
Hypothesis Testing, and the Z Distribution
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Sample Questions
Q1) Because it is said in science "one experiment does not prove anything," statisticians rely on ___________ to test the usefulness of theories.
A)a controlled experiment
B)at least two experiments
C)parametric and nonparametric tests
D)replication
Q2) The minimum conventional level of statistical significance is ___________.
A).01
B).05
C).10
D).50
Q3) Which of the following is a Type I error?
A)rejecting H<sub>0</sub> when H<sub>0</sub> is false
B)rejecting H<sub>0</sub> when H<sub>0</sub> is true
C)not rejecting H<sub>0</sub> when H<sub>0</sub> is true
D)not rejecting H<sub>0</sub> when H<sub>0</sub> is false
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Chapter 6: An Introduction to Correlation and Regression
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Sample Questions
Q1) According to the text, a correlational analysis _________
A)sometimes provides clues about cause-effect relationships
B)often provides clues about cause-effect relationships
C)never provides clues about cause-effect relationships
D)is relatively useless compared to controlled experiments
Q2) In the study of 30 pairs of scores in a Pearson correlation, what are the degrees of freedom?
A)30
B)29
C)28
D)15
Q3) The Pearson correlation on these data is r =
A).61
B).71
C).81
D).91
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Chapter 7: The T Test for Independent Groups
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Sample Questions
Q1) The degrees of freedom for this problem are A)18
B)16
C)8
D)20
Q2) The derived t value for this problem is
A)7.338
B)4.816
C)11.373
D)12.000
Q3) The degrees of freedom for this problem are A)30
B)28
C)15
D)14
Q4) Are the mean percentages significantly different?
A)yes, at p < .05
B)yes, at p < .01
C)yes, at p < .001
D)no, at p > .05
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Chapter 8: The T Test for Dependent Groups
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Sample Questions
Q1) The value of the numerator in the dependent t test formula for this problem is approximately
A)0.08
B)4.50
C)4.42
D).333
Q2) What statistical decision is appropriate?
A)retain the null hypothesis
B)reject the null hypothesis
C)reject the alternative hypothesis
D)the results are significant at p < .05
Q3) Design 3 of the dependent t test controls for the
A)order of presentation
B)regression effect
C)diminishing effect
D)abuse of power
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Chapter 9: Analysis of Variance Anova: One-Factor
Completely Randomized Design
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30 Flashcards
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Sample Questions
Q1) Which of the following can be concluded about this experiment?
A)There are differences in weight loss among the groups.
B)There are no differences in weight loss among the groups.
C)One group was superior to the other groups in weight loss.
D)Two of the groups were better than the other groups in weight loss.
Q2) The sum of squares between groups (SSB) for this problem is
A)17,451.714
B)63,902.714
C)21.293
D)46,451.000
Q3) A standard deviation derived from a finite sample of means from a population of scores is known as the A)standard deviation
B)sampling deviation
C)standard error of the mean D)power of a test
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11
Chapter 10: After a Significant Analysis of Variance: Multiple Comparison Tests
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Sample Questions
Q1) The value of q in the appendix for Tukey's q values is
A)3.90
B)4.91
C)3.85
D)4.80
Q2) The results of Tukey's HSD test for Problem 1 revealed
A)the Weight-Lookers group was the best diet
B)the Weight-Lookers group lost the least weight
C)there were no differences in mean weight loss between the Weight-Lookers group and the Low-Carbs group
D)the E-mail-A-Meal group lost more weight than the Life on Herbs group
Q3) Tukey's HSD value for Problem 1 would be
A)5.45
B)3.90
C)4.91
D)4.80
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Chapter 11: Analysis of Variance Anova: One-Factor
Repeated-Measures Design
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Sample Questions
Q1) The obtained F value for this problem is A)23.20
B)32.45
C)35.64
D)67.13
Q2) The sum of squares for subjects (SSS) for this problem is
A)48,598.087
B)9,852.485
C)57,207.714
D)739,884.557
Q3) The degrees of freedom for SSB are A)3
B)18
C)24
D)35
Q4) The degrees of freedom for SST are A)3
B)6
C)27
D)35
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Chapter 12: Analysis of Variance: Two-Factor Completely
Randomized Design
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25 Verified Questions
25 Flashcards
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Sample Questions
Q1) The error term sums of squares are
A)157.63
B)45.38
C)615.13
D)935.31
Q2) The sums of squares for fillings are A)615.13
B)935.31
C)157.63
D)117.19
Q3) The degrees of freedom for fillings are
A)1
B)2
C)42
D)47
Q4) The degrees of freedom for the interaction are A)1
B)2
C)42
D)47
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Chapter 13: Post Hoc Analysis of Factorial Anova
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Sample Questions
Q1) Tukey's HSD value for the interaction between gender and drug levels (at p = .05) is
A)3.44
B)4.23
C)2.17
D)1.17
Q2) In the calculation of Tukey's HSD value, the calculation can be made at either p < .05 or .01
A)but those values are chosen based on the significance of the F value B)depending on which level explains your data better C)depending on the effect size analysis
D)or even p < .001
Q3) In a 3 × 5 factorial ANOVA, there will be ____ means in the interaction.
A)4
B)8
C)15
D)2
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Chapter 14: Factorial Anova: Additional Designs
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Sample Questions
Q1) The SS for trials is
A)324.967
B)1936.033
C)116.033
D)64.067
E)68.467
Q2) The df for the sessions factor is A)1
B)2
C)3
D)54
E)59
Q3) The df for the interaction is A)1
B)2
C)3
D)24
E)29
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Chapter 15: Nonparametric Statistics: The Chi-Square Test
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Sample Questions
Q1) Which of the following is not an assumption of the chi-square test?
A)the data come from normal distributions
B)independent scores
C)minimum of five scores per cell
D)dependent variable is a frequency or count
Q2) The degrees of freedom for this chi-square problem are
A)1
B)2
C)5
D)200
Q3) Karl Pearson originally called the chi-square test a
A)parametrically challenged test
B)normal distribution test
C)"jolly good" test
D)goodness-of-fit test
Q4) The expected cell frequency for the people living after atherectomy is
A)562.62
B)499.00
C)387
D)56.62
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Chapter 16: Other Statistical Parameters and Tests
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Sample Questions
Q1) A true positive is defined as
A)a test result is positive, and the patient actually has the condition
B)a test is negative, and the patient actually has the condition
C)a test is positive, and the patient doesn't have the condition
D)a test is negative, and the patient doesn't have the condition
Q2) Which of the following is true about a multivariate analysis of variance?
A)one or more independent variables, one or more dependent variables
B)two or more independent variables, with one or more levels of each independent variable
C)one or more independent variables, two or more dependent variables
D)all of the above are true
Q3) The number of new verified cases of a disease in a year is called
A)prevalence
B)incidence
C)likelihood
D)number of new cases
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