EBP QUIZ 4 MEASUREMENTS AND STATISTICS

The difference between the observed score and what exists in reality (true score) is called: Split-half reliability Standard deviation Measurement error Homogeneity

Measurement error

What statistical test would you use to simultaneously test the differences between temperatures of four groups of subjects t-test for independent samples Chi-square t-test for dependent samplesANOVA

ANOVA

The researcher's own voice is heard most in which section of a study? Literature review Conclusions Findings Results

Conclusions

Which of the following can be measured using direct measures? Abstract factors, such as anxiety, self-esteem, pain, and coping. Concrete factors, such as age, gender, height, weight, and blood pressure Psychological factors, such opinions and feelings Traits, such as personality and hardiness

Concrete factors, such as age, gender, height, weight, and blood pressure

Which of the following are purposes of statistical analysis? (Choose all that apply) Examining the numerical data gathered in a study Determining correct protocol for clinical research Providing insight into the meaning of the data Providing the validity of a nursing theory

Examining the numerical data gathered in a study Providing insight into the meaning of the data

Type I error could occur for which of the following reasons? Large sample size Normal distribution Lenient level of significance Large difference between groups

Lenient level of significance

Which of the following is an example of random error in measurement? Use of a mismarked tape measure to determine infant head circumference Occasional discussion of question with some subjects during completion of the measurement tool Inadvertent deletion of one question from the questionnaire sent to all subjects in a research study. Consistent use of tuning fork pitched too high

Occasional discussion of question with some subjects during completion of the measurement tool

What level of a measurement is this scenario representing? For families of three children, indicate where the male child is in the birth order: 1. Oldest ___ 2. Middle ___ 3. Youngest ___ Ratio Nominal Ordinal Interval

Ordinal

Which level of measurement represent grades on a multiple-choice final exam? Ordinal Ratio Nominal Interval

Ratio

A correlation coefficient is used in tool development to determine Stability Reliability Equivalence of items Validity

Reliability

The Median is represented by which score in the following frequency distribution? X (#) f (frequency) 12 3 11 0 10 1 8 1 7 1 b. 10 d. 7 a. 12 c. 9

b. 10