# Statistics

Catherine Messi
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75 multiple choice masters level healtcare statistics questions.

 1. What does the letter t represent in the following: t(58) = 2.001, p (Points : 2)

test statistic

t-value

degrees of freedom

significance level

 Question 2. 2. What does the number 2.001 represent in the following: t(58) = 2.001, p (Points : 2)

test statistic

t-value

degrees of freedom

significance level

 Question 3. 3. A measure of how different two groups are from one another is the __________. (Points : 2)

error size

significance level

effect size

mean scores

 Question 4. 4. When computing effect size, the sample size is ________. (Points : 2)

used in the denomenator

not taken into account

used in the numerator

sometimes taken into account

 Question 5. 5. If you want to examine one group of subjects under two different conditions, which statistical techniques should you select? (Points : 2)

Regression

Dependent samples t-test

Analysis of Variance

Independent samples t-test

 Question 6. 6. What is another name that statisticians talk about dependent tests? (Points : 2)

Regression

Correlation

Repeated Measures

Group Differences

 Question 7. 7. In the formula that computes a t value, what does nSD represent? (Points : 2)

sum of the difference between groups

sum of the means for group one

sum of the means for group two

sum of the squared differences

 Question 8. 8. The test statistic calculated by the statistical procedure selected is known as the ___________. (Points : 2)

cricial value

significance level

obtained value

p value

 Question 9. 9. If the obtained value is less than the critical value, what should you do? (Points : 2)

reject the null hypothesis

accept the null hypothesis

accept the research hypothesis

 Question 10. 10. How many subjects were examined based on the following: t(29) = 2.001, p (Points : 2)

29

30

31

32

 Question 11. 11. What is another name for a dependent samples t-test? (Points : 2)

Single sample

Double sample

Paired sample

Freed sample

 Question 12. 12. Which of the following represent degrees of freedom? (Points : 2)

fd

df

d

f

 Question 13. 13. What is the numerator of the t-test for Dependent means formula? (Points : 2)

SD

n

M1-M2

SD2 (n-1)

 Question 14. 14. In the equation t (78) = 1.03, p (Points : 2)

test statistic

degrees of freedom

obtained value

alpha level

 Question 15. 15. Which of the following is the same as t2 when examining the difference between two groups? (Points : 2)

F

t

Cohen's d

F2

 Question 16. 16. What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels? (Points : 2)

One-way

Two-way

Three-way

Four-way

 Question 17. 17. If you wanted to examine whether the level of parental involvement differs based on students' grade in school (i.e. 1st, 2nd, 3rd, etc.), what is the dependent variable of interest? (Points : 2)

Students

Parents

Level of parent involvement

 Question 18. 18. Which of the following is the formula for computing the F statistic? (Points : 2)

F = MSbetweem / MSwithin

F = SSbetweem / SSwithin

F = MSwithin / MSbetweem

F = SSwithin / SSbetweem

 Question 19. 19. The variability between groups is due to ______________. (Points : 2)

chance

the grouping factor

the F ratio

the level of the dependent variable

 Question 20. 20. When you compute the sum of the differences between each individual score and the group mean, you have calculated the _____________. (Points : 2)

MS within

SS within

MS between

SS between

 Question 21. 21. When interpreting F (2, 27) = 8.80, p   (Points : 2)

30

27

3

2

 Question 22. 22. When interpreting F (2, 27) = 8.80, p   (Points : 2)

30

29

3

2

 Question 23. 23. In a 4 x 3 factorial design, there are how many levels of the second grouping factor? (Points : 2)

3

4

7

12

 Question 24. 24. ANOVA first tests for an overall difference between the means. This is known as what type of test? (Points : 2)

omnibus

pluribus

omnivorous

omnibor

 Question 25. 25. ANOVA with replication is also known as ___________. (Points : 2)

Repeated measures

Between group design

Mixed design

One-way ANOVA

 Question 26. 26. When type of design includes an ANOVA where one factor is repeated and the other is not? (Points : 2)

Repeated design

Between groups design

Mixed design

One-way ANOVA

 Question 27. 27. When analysis of data reveals a difference between levels of a factor, what is this called? (Points : 2)

Interaction effect

Factor effect

Level effect

Main effect

 Question 28. 28. Results from an ANOVA are placed in what type of table? (Points : 2)

ANOVA table

Source table

Effects table

Output table

 Question 29. 29. Which of the following would be an example of a design that examines the effects gender and SES ( high SES and low SES) on a test of student achievement? (Points : 2)

One-way ANOVA

2 x 2 ANOVA

Multivariate ANOVA

3 x 2 ANOVA

 Question 30. 30. When you are interested in finding out if students' achievement level changes over time as result of a reading intervention, what type of ANOVA would you use? (Points : 2)

Repeated measures

Between groups design

Mixed design

One-way ANOVA

 Question 31. 31. What type of ANOVA would examine effects of political party (eg. democrat, republican, or independent) affiliation and gender on the attitudes toward the death penalty? (Points : 2)

2 x 2 ANOVA

3 x 2 ANOVA

3 x 2 x 1 ANOVA

3 x 3 ANOVA

 Question 32. 32. Which of the following would be an example of a design that examines the effects gender and school type (i.e. elementary, middle, high school) on a scale of student attitudes toward learning? (Points : 2)

2 x 2 ANOVA

3 x 3 ANOVA

2 x 3 ANOVA

Simple ANOVA

 Question 33. 33. The effect of one factor is called the _____________. (Points : 2)

interaction effect

main effect

differential effect

experimental effect

 Question 34. 34. How many null hypotheses are used in a 2 x2 factorial ANOVA? (Points : 2)

1

2

3

4

 Question 35. 35. Measures which occur at the same time are known as what type of measures? (Points : 2)

predictive

longitudinal

concurrent

consecutive

 Question 36. 36. What is another term for a positive correlation? (Points : 2)

indirect

nondirectional

direct

unidirectional

 Question 37. 37. Which of the following is an example of a null hypothesis for testing a correlation coefficient? (Points : 2)

H1: rxy = 0

H1: rxy > 0

H0: rxy = 0

H0: rxy > 0

 Question 38. 38. The level of risk or Type I error typically set for testing the level of significance of a correlation coefficient is which of the following? (Points : 2)

.01

.05

.95

.99

 Question 39. 39. Which of the following types of reliability correlates scores on a single measure on two different occasions? (Points : 2)

test-retest

inter-rater

parallel forms

internal consistency

 Question 40. 40. If the correlation between two variables is .496, how much of the variance has not been accounted for? (Points : 2)

24.6%

49.6%

50.4%

75.4%

 Question 41. 41. If a research hypothesis does not predict the direction of a relationship, the test is __________. (Points : 2)

one-tailed

two-tailed

direct

positive

 Question 42. 42. If a simple Pearson correlation value = .512, what percentage of variance is accounted for? (Points : 2)

26%

49%

51%

74%

 Question 43. 43. If a simple Pearson correlation value = .362, what percentage of variance is unaccounted for? (Points : 2)

25%

36%

56%

85%

 Question 44. 44. If a simple Pearson correlation value = .75, what percentage of variance is unaccounted for? (Points : 2)

25%

44%

56%

75%

 Question 45. 45. What statistical technique is used to make predictions of future outcomes based on present data? (Points : 2)

Analysis of variance

Repeated measures

Linear regression

Correlational analysis

 Question 46. 46. Which of the following symbols is associated with the predicted score in the regression equation? (Points : 2)

X

Y

a

b

 Question 47. 47. Which of the following symbols is associated with the slope in the regression equation? (Points : 2)

X

Y

a

b

 Question 48. 48. Which of the following symbols is associated with the y-intercept in the regression equation? (Points : 2)

X

Y

a

b

 Question 49. 49. How would you represent the predicted score of Y based on a known value of X? (Points : 2)

y

y-intercept

Y'

Y = Xa

 Question 50. 50. Which of the following determines the direction of the regression line? (Points : 2)

intercept

predicted score

criterion score

slope

 Question 51. 51. What must be used to examine an outcome that is predicted from two independent variables? (Points : 2)

Multivariate regression

Multiple regression

Simple regression

Complicated regression

 Question 52. 52. In the multiple regression formula, what does X2 represent? (Points : 2)

value of the second dependent variable

value of the second independent variable

value of the criterion variable

value of the predicted score

 Question 53. 53. If the correlation between X and Y is equal to -1.0, what do we know about the prediction of Y by X? (Points : 2)

It's negative

It's postive

It's perfect

It's direct

 Question 54. 54. If you are trying to predict Y scores from X scores, X is referred to as the __________. (Points : 2)

nominal variable

dependent variable

predictor variable

criterion variable

 Question 55. 55. The general formula for a regression line is ________. (Points : 2)

a2 + b2 = c2

aX + b = Y

bX + a = Y'

dX + a = Y'

 Question 56. 56. Which of the following is the symbol for summation? (Points : 2)

D

h

c

S

 Question 57. 57. Which of the following is the most commonly used nonparametric test? (Points : 2)

t-test

ANOVA

Chi-Square

Mann-Whitney

 Question 58. 58. A one-sample chi-square is also known as ________. (Points : 2)

Goodness of fit test

Test of independence

Wilcoxon rank

Mann-Whitney

 Question 59. 59. A two-sample chi-square is also known as ________. (Points : 2)

Goodness of fit test

Test of independence

Wilcoxon rank

Mann-Whitney

 Question 60. 60. If you have 100 respondents identifying their gender, what would the expected frequency be for each category? (Points : 2)

25

50

75

100

 Question 61. 61. Which of the following nonparametric tests is used to compare two independent samples? (Points : 2)

Mann-Whitney

Wilcoxon rank

Spearman rank

Kolmogorov-Smirnov

 Question 62. 62. Which of the following nonparametric tests is used to compare the magnitude and direction of differences between two groups? (Points : 2)

Mann-Whitney

Wilcoxon rank

Spearman rank

Fisher's exact

 Question 63. 63. Which of the following is the correct formula for calculating the degrees of freedom for a one-sample chi-sqaure? (Points : 2)

n - 1

n - 3

r - 1

r - 3

 Question 64. 64. If there are three categories for which you are calculating a one-sample chi-square, what are the degrees of freedom? (Points : 2)

0

1

2

3

 Question 65. 65. Nonparametric statistics is known as _______________. (Points : 2)

non-normal statistics

distribution-free statistics

skewed distribution statistics

parametric statistics

 Question 66. 66. Which of the following advanced procedures is characterized by the use of more than one dependent variable? (Points : 2)

ANOVA

ANCOVA

MANOVA

Repeated Measures ANOVA

 Question 67. 67. Which of the following procedures can be utilized to examine within groups change over time? (Points : 2)

ANOVA

ANCOVA

MANOVA

Repeated Measures ANOVA

 Question 68. 68. If you want to equalize initial differences between two groups before examining group difference, what procedure would you use? (Points : 2)

ANOVA

ANCOVA

MANOVA

Repeated Measures ANOVA

 Question 69. 69. Which of the following is sometimes referred to as an "umbrella" term for techniques such as Regression, Path Analysis, and Factor Analysis? (Points : 2)

MANOVA

EFA

ANOVA

SEM

 Question 70. 70. If a researcher wants to examine the direction of a relationship between two variables such that he/she posits that one variable causes the other, what type of statistical procedure would be used? (Points : 2)

Correlation

ANOVA

MANOVA

Path Analysis

 Question 71. 71. Of the following, which procedure is sometimes referred to as a "data reduction" method as it allows a researcher to explore how items on a particular measure cluster together? (Points : 2)

Correlation

Factor Analysis

Path Analysis

MANOVA

 Question 72. 72. When is MANOVA most appropriate to use? (Points : 2)

one DV

two IVs and one DV

two or more DVs

more than three IVs

 Question 73. 73. In what type of ANOVA, is there one factor on which participants are tested more than once? (Points : 2)

Analysis of Covariance

Repeated Measures

Multivariate Analysis

Path Analysis

 Question 74. 74. Which of the following statistical techniques is used when values of more than one variable are used to predict the value of another variable? (Points : 2)

ANOVA

EFA

MANOVA

Mutliple Regression

 Question 75. 75. What is Cronbach's alpha used to assess? (Points : 2)

mean differences

change over time

internal consistency

relationships among factors

• 7 years ago
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