Statistical pattern as an important statistical category includes the following conformities

Calculate the average yield of crops having following data: n₁=10, n₂= 5, n₃=5, x₁=25, x₂=31, x3=28). Calculate the average yield

Name the type of grouping that is used for studying the availability and direction of connection between signs, from which one is effective, and another - factor that affects the result:

The enterprise planned to increase production during the year on 5%, and actually increased on 7,5%. Calculate the level of the plan execution.

Dispersion relatively to any value A which is not equal to the arithmetic middling (A ≠0) is:

Match names of average values with the methods of their calculation:

Statistical grouping – is:

Since the beginning of the year inflation increased on 2%. What will be the inflation rate for December 1?

Variation - is

Which of the following dispersion correlations do not match the rule of adding variances: