Unit 22 · Basic Statistics
15 randomly selected questions from a bank of 60 · one attempt · 15 minutes on the clock.
Topics covered
- Data types (qualitative/quantitative, nominal/ordinal, discrete/continuous) and frequency distribution construction
- Class limits, class boundaries, class marks, Sturges' rule, and cumulative frequency
- Histograms (equal and unequal class intervals), frequency polygons, and ogives (cumulative frequency polygons)
- Measures of central tendency — arithmetic mean (direct, shortcut, and coding methods), median, mode, geometric mean, and harmonic mean
- Properties of arithmetic mean, weighted mean, and moving averages (odd- and even-period)
- Graphical estimation of median, quartiles, and mode using ogives and histograms
- Measures of dispersion — range, variance, mean deviation, and standard deviation (absolute and relative)
Please fill in your name, class and roll/GR# to start the quiz.
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All attempts on this device, stored locally with a unique session ID.
| # | Name | Class | Roll/GR# | Correct | % | Status | Date |
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