The Most Important Aspect of Sampling in a Survey Study

question 11

Multiple Choice

The most important aspect of sampling in a survey study is

• A) its inclusion of equal numbers of individuals from different groups in the population.
• B) the number of people in the sample.
• C) the ratio of the sample size to the population size.
• D) the extent to which the sample in this study matches the population proportionally in terms of demographic variables.

---

Definitions:

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data points, calculated as the square root of the variance.

Variance

A measure of the spread or dispersion of a set of data points, indicating how much the data varies from the average of that set.

Outliers

Observations in a dataset that significantly differ from the other data points, often indicating variability or errors.

1.5*IQR

A statistical calculation used to identify outliers. It involves multiplying the interquartile range (IQR) by 1.5 and applying this value above the upper quartile and below the lower quartile.