Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

EBP Exam 2 > Chapter 16 > Flashcards

Chapter 16 Flashcards

1
Q

The mean of sampling distribution refers to what?

A

Population and normal curve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a normal curve?

A

Symmetrical about the mean

Unimodal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which statements are applicable to type 2 errors?

A

They occur when the sample size is too small

Mean accepts the null hypothesis when it is false

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When are the parametric tests of significance used?

A

Measurement is on an interval or ratio scale

At least one population parameter is estimated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the levels of measurement, in ascending order?

A

Nominal, ordinal, interval, ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Which level of measurement is ranked variables or events with unequal intervals between numbers on the scale?

A

Ordinal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which level of measurement has a scale with an absolute zero?

A

Ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

A frequency distribution is used to do what?

A

Organize data by the frequency of response

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When data are skewed and the researcher is interested in the “typical” score, what is the most appropriate measure of central tendency for the nurse researcher to use?

A

Median

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What percentage of scores fall within 1 standard deviation (SD) of the mean?

A

68%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the best way to describe the distribution of the ages of all people who died in 2013?

A

Negatively skewed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When data are positively skewed, where will the mean be located?

A

To the right of the median

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Which measure of variability is the most unstable?

A

Range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the measure of variability that indicates the range of the middle 50% of the scores?

A

Semiquartile range

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A percentile of 90 is exceeded by what percentage of the scores?

A

10%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A statistic is a characteristic of what?

A

Sample

17
Q

What occurs when differences between score are too large to be caused by chance?

A

Null hypothesis is rejected

18
Q

When is the t statistic used?

A

When the investigator is measuring the differences of means between two groups

19
Q

Which level of measurement focuses on relative rankings?

A

Ordinal

20
Q

Which level of measurement focuses on classification?

A

Nominal

21
Q

Which level of measurement focuses on rank ordering with equal intervals and absolute zero?

A

Ratio

22
Q

Which level of measurement focuses on rank ordering with equal intervals?

A

Interval and ratio

23
Q

Of the measures of central tendency, the most stable is considered to be what?

A

Mean

24
Q

The nurse researcher is interested in performing parametric tests of association on more than two variables. The most appropriate tests to use would consist of what?

A

Path analysis

Multiple regression

EBP Exam 2 (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions