IPR End of course quiz

Which of the following is a measure of variability in a data set?

• Mean

• Standard Deviation

• Median

• Mode

What is the main difference between probability and nonprobability sampling?

• Probability sampling involves random selection, while nonprobability does not.

• Nonprobability sampling is more accurate than probability sampling.

• Probability sampling is faster to conduct than nonprobability sampling.

• Nonprobability sampling requires a larger sample size than probability sampling.

What is the purpose of a confidence interval in statistics?

• To measure the central tendency

• To estimate the range of values for a population parameter

• To calculate the mean of a data set

• To determine the mode of a data set

What does the acronym IQR stand for in descriptive statistics?

• Interquartile Range

• Internal Quality Ratio

• Integrated Quantitative Result

• Initial Query Response

What is the shape of a normal distribution curve?

• Bell-shaped

• U-shaped

• Linear

• Exponential

What p-value indicates a significant results?

• p = 0.05

• p < 0.5

• p < 0.10

• p < 0.05

What does a correlational design describe?

• The strength and direction of the relationship between two variables

• The cause and effect between two variables

• The average of two variables

• The difference between two variables

What is the parametric statistic used in correlational design?

• Spearman’s Rho

• Pearson’s r

• Chi-square

• T-test

Which section of a scientific paper discusses the interpretation, critique, and future directions?

• Introduction

• Methods

• Discussion

• Appendices

How do qualitative designs help in understanding meanings?

• By using mathematical models

• By understanding how meanings are constructed

• By focusing on numerical data

• By conducting surveys