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  2. Grouped data - Wikipedia

    en.wikipedia.org/wiki/Grouped_data

    Table 2: Frequency distribution of the time taken (in seconds) by the group of students to answer a simple math question; Time taken (in seconds) Frequency 5 ≤ t < 10: 1 10 ≤ t < 15: 4 15 ≤ t < 20: 6 20 ≤ t < 25: 4 25 ≤ t < 30: 2 30 ≤ t < 35: 3

  3. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    A frequency distribution table is an arrangement of the values that one or more variables take in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and in this way, the table summarizes the distribution of values in the sample.

  4. List of probability distributions - Wikipedia

    en.wikipedia.org/wiki/List_of_probability...

    Benford's law, which describes the frequency of the first digit of many naturally occurring data. The ideal and robust soliton distributions. Zipf's law or the Zipf distribution. A discrete power-law distribution, the most famous example of which is the description of the frequency of words in the English language.

  5. Probability distribution - Wikipedia

    en.wikipedia.org/wiki/Probability_distribution

    Frequency distribution: a table that displays the frequency of various outcomes in a sample. Relative frequency distribution: a frequency distribution where each value has been divided (normalized) by a number of outcomes in a sample (i.e. sample size). Categorical distribution: for discrete random variables with a finite set of values.

  6. Contingency table - Wikipedia

    en.wikipedia.org/wiki/Contingency_table

    The example above is the simplest kind of contingency table, a table in which each variable has only two levels; this is called a 2 × 2 contingency table. In principle, any number of rows and columns may be used. There may also be more than two variables, but higher order contingency tables are difficult to represent visually.

  7. Category:Mathematical tables - Wikipedia

    en.wikipedia.org/wiki/Category:Mathematical_tables

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  8. Cayley table - Wikipedia

    en.wikipedia.org/wiki/Cayley_table

    The Cayley table tells us whether a group is abelian. Because the group operation of an abelian group is commutative, a group is abelian if and only if its Cayley table's values are symmetric along its diagonal axis. The group {1, −1} above and the cyclic group of order 3 under ordinary multiplication are both examples of abelian groups, and ...

  9. Pivot table - Wikipedia

    en.wikipedia.org/wiki/Pivot_table

    A pivot table is a table of values which are aggregations of groups of individual values from a more extensive table (such as from a database, spreadsheet, or business intelligence program) within one or more discrete categories. The aggregations or summaries of the groups of the individual terms might include sums, averages, counts, or other ...