Solving task on-line

Items centralization raspredeleniya

Group called the partition together into groups that are homogeneous on any grounds.
Grouping variable - is a sign on which is unification of the separate units together in homogeneous groups.

With this service is also produced automatically test hypotheses about the form of distribution using the criterion of consent Pearson.

Instruction

Specify the number of data (number of rows), then Next . The resulting solution is stored in the file MS Word. For editing, you can use formula editors Microsoft Equation

Count rows Type series Discrete series Interval series Variational series What is "Type series" The level of significance 0.005 0.01 0.025 0.05 0.1 0.25 0.4 Rounding 2 4

Little theory

To characterize the average value of the trait in a number of variations using the arithmetic mean, median and mode.
Average - a summary measure describing a typical level phenomenon. It expresses the value of the trait, per unit population.
special kind of averages - structural average - used to study the internal structure of distribution series values of the trait, as well as to evaluate the average (power type), if the available static data of its calculation can not be executed .
Median - important feature, which divides the unit ranked number two parts.
Fashion - the most frequent value of the trait in a given set of units.
swing variation - the difference between the maximum and minimum values of the features of the original series.
quartile - a characteristic value in ranked number distribution, selected in such a way that 25% of population units will be less than the Q1.
When comparing variability of different traits in the same population or when comparing the same trait in multiple populations with varying magnitude of the arithmetic mean using relative performance variations.

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