Question 1

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for nominal-level data?

Accepted Answer

A)   Pearson's r
B)   Spearman's rho
C)   Kendall's tau
D)   phi coefficient

Question 2

What occurs with a Type II error?

Accepted Answer

A)   There is a positive relationship between research variables.
B)   There is a negative relationship between research variables.
C)   There is a false positive relationship between research variables.
D)   There is a false negative relationship between research variables.

Question 3

What does inferential statistics permit the researcher to do?

Accepted Answer

A)   Generalize to a population based on data from a sample.
B)   Describe information from empirical observation.
C)   Interpret descriptive statistics.
D)   Reject the null hypothesis. A

Question 4

What is a major factor affecting standard error of the mean?

Accepted Answer

A)   Value of the score range
B)   Shape of the sampling distribution
C)   Sample size
D)   Value of the mean

Question 5

The independent variable is weight gain during pregnancy. The dependent variable is the infant's birth weight. What is the appropriate test statistic?

Accepted Answer

A)   t-test
B)   ANOVA
C)   Chi-square
D)   Pearson's r D

Question 6

What is the statistical procedure that is used to determine whether a significant difference exists between any numbers of group means?

Accepted Answer

A)   t-test
B)   ANOVA
C)   Correlation coefficient
D)   Mann Whitney U test

Question 7

What test would a nurse researcher use to test hypotheses about group differences in proportions?

Accepted Answer

A)   t-test
B)   ANOVA
C)   Correlation coefficient
D)   Chi-square

Question 8

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is interval estimation?

Accepted Answer

A)   Provides an estimate of a population parameter
B)   Provides a single descriptive value of the population estimate
C)   Provides the upper and lower limits of arange of values
D)   Provides the ability to make objective decisions about hypothesis validity

Question 9

The independent variable is marital status. The dependent variable is whether or not the person had been hospitalized in the preceding 12 months. What is the appropriate statistical test?

Accepted Answer

A)   t-test
B)   ANOVA
C)   Chi-square
D)   Pearson's r

Question 10

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for interval-level data?

Accepted Answer

A)   Pearson's r
B)   Spearman's rho
C)   Kendall's tau
D)   phi coefficient

Question 11

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is point estimation?

Accepted Answer

A)   Provides an estimate of a population parameter
B)   Provides a single descriptive value of the population estimate
C)   Provides the upper and lower limits of arange of values
D)   Provides the ability to make objective decisions about hypothesis validity

Question 12

A 95% confidence level is associated with how many standard deviation units?

Accepted Answer

A)   1.96
B)   2.58
C)   Depends on the test statistic
D)   Depends on the sample size

Question 13

Most testing involves which type of test?

Accepted Answer

A)   One tailed
B)   Two tailed
C)   Parametric
D)   Nonparametric

Question 14

What does hypothesis testing through statistical procedures enable researchers to do?

Accepted Answer

A)   Make objective decisions about the validity of the hypotheses.
B)   Make objective decisions about the reliability of the hypotheses.
C)   Make subjective decisions about the validity of the hypotheses.
D)   Make subjective decisions about the reliability of the hypotheses.

Question 15

The independent variable is treatment group. The dependent variable is an infants' length of stay in the hospital after birth. What is the appropriate statistical test?

Accepted Answer

A)   t-test
B)   ANOVA
C)   Correlation coefficient
D)   Mann Whitney U test

Question 16

What occurs with a Type I error?

Accepted Answer

A)   There is a positive relationship between research variables.
B)   There is a negative relationship between research variables.
C)   There is a false positive relationship between research variables.
D)   There is a false negative relationship between research variables. C

Question 17

What must the nurse researcher estimate in power analysis?

Accepted Answer

A)   Significance level
B)   Effect size
C)   Power criterion
D)   Type I error

Exam 17: Inferential Statistics

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for nominal-level data?

Correct Answer
verified

What occurs with a Type II error?

Correct Answer
verified

What does inferential statistics permit the researcher to do?

Correct Answer
verified
A

What is a major factor affecting standard error of the mean?

Correct Answer
verified

The independent variable is weight gain during pregnancy. The dependent variable is the infant's birth weight. What is the appropriate test statistic?

Correct Answer
verified
D

What is the statistical procedure that is used to determine whether a significant difference exists between any numbers of group means?

Correct Answer
verified

What test would a nurse researcher use to test hypotheses about group differences in proportions?

Correct Answer
verified

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is interval estimation?

Correct Answer
verified

The independent variable is marital status. The dependent variable is whether or not the person had been hospitalized in the preceding 12 months. What is the appropriate statistical test?

Correct Answer
verified

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for interval-level data?

Correct Answer
verified

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is point estimation?

Correct Answer
verified

A 95% confidence level is associated with how many standard deviation units?

Correct Answer
verified

Most testing involves which type of test?

Correct Answer
verified

What does hypothesis testing through statistical procedures enable researchers to do?

Correct Answer
verified

The independent variable is treatment group. The dependent variable is an infants' length of stay in the hospital after birth. What is the appropriate statistical test?

Correct Answer
verified

What occurs with a Type I error?

Correct Answer
verified
C

What must the nurse researcher estimate in power analysis?

Correct Answer
verified

Exam 17: Inferential Statistics

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for nominal-level data?

Correct AnswerverifiedShow Answer

What occurs with a Type II error?

Correct AnswerverifiedShow Answer

What does inferential statistics permit the researcher to do?

Correct AnswerverifiedA

What is a major factor affecting standard error of the mean?

Correct AnswerverifiedShow Answer

The independent variable is weight gain during pregnancy. The dependent variable is the infant's birth weight. What is the appropriate test statistic?

Correct AnswerverifiedD

What is the statistical procedure that is used to determine whether a significant difference exists between any numbers of group means?

Correct AnswerverifiedShow Answer

What test would a nurse researcher use to test hypotheses about group differences in proportions?

Correct AnswerverifiedShow Answer

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is interval estimation?

Correct AnswerverifiedShow Answer

The independent variable is marital status. The dependent variable is whether or not the person had been hospitalized in the preceding 12 months. What is the appropriate statistical test?

Correct AnswerverifiedShow Answer

What is the statistical test to measure the magnitude of bivariate relationships and to test whether the relationship is significantly different from zero for interval-level data?

Correct AnswerverifiedShow Answer

Statistical inference consists of two approaches: estimating parameters and testing hypotheses. What is point estimation?

Correct AnswerverifiedShow Answer

A 95% confidence level is associated with how many standard deviation units?

Correct AnswerverifiedShow Answer

Most testing involves which type of test?

Correct AnswerverifiedShow Answer

What does hypothesis testing through statistical procedures enable researchers to do?

Correct AnswerverifiedShow Answer

The independent variable is treatment group. The dependent variable is an infants' length of stay in the hospital after birth. What is the appropriate statistical test?

Correct AnswerverifiedShow Answer

What occurs with a Type I error?

Correct AnswerverifiedC

What must the nurse researcher estimate in power analysis?

Correct AnswerverifiedShow Answer

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A

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D

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C

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