Analysis of quantitative data - Univariate analysis and levels of measurement

6 important questions on Analysis of quantitative data - Univariate analysis and levels of measurement

What are the two measures for univariate analysis?

1. Central tendency --> say something about the average
2. Dispersion --> say something about the score around the average.

What is the difference between dichotomy and nominal measurement level?

Dichotomy consists of two answer options: yes, no, high, low etc.
Nominal can consist of more than two answer options, still the score assigned doesn't matter.

What is a mode and on which level do you measure it?

Mode is the most frequent answer given. It is measured on an nominal level
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What is the median and on which level is it measured?

Median is the middle answer given, when ordered. Measured on a ordinal level.

What is the standard deviation?

This is the spread around the mean. Measured at ratio / interval level.

What are time series and trend extrapolation?

Time series is when a variable is measured over several moments in time. It says something about the process.

If you predict something about the future it is called trend extrapolation.

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