Which of the Following Things Can Be Done to Reduce

question 34

Multiple Choice

Which of the following things can be done to reduce measurement error?

• A)Using less precise measurements
• B)Using more reliable measurements
• C)Using a pretest/posttest design
• D)Increasing unsystematic variance

---

Definitions:

Central Tendency

Central tendency refers to a central value or a typical value for a probability distribution. It is a measure that attempts to describe a set of data by identifying the central position within that set of data. The most common measures of central tendency are the mean, median, and mode.

Interval Data

Interval data refers to a type of quantitative data that not only categorizes and orders the quantities but also precisely measures the differences between them. Unlike ordinal data, interval data has equal intervals between values, making mathematical operations meaningful.

Ratio Data

A type of quantitative data that possesses a natural zero point and allows for meaningful comparisons using division, enabling measurement of both differences and ratios between data points.

Variance

Variance is a statistical measure that represents the degree to which a set of observations differ from each other. It is the expectation of the squared deviation of a random variable from its mean, and it gives insights into the dispersion of a dataset.