РФЭИ Итоговый экзамен Статистика 28 вопросов

1. The indicator reflects how much the average specific embodiments deviate from their average value is called:
a) The coefficient of variation;
b) dispersion;
c) .Razmah variation;
d) The standard deviation.
2. Is it true?
If all options are an averaged feature to reduce or increase the number of A, the arithmetic average, respectively decrease or increase by the same number A.
a) Yes;
b) No.
3. In the case where the observation exposed without exception units together, this observation is called:
a) monographic;
b) Basic array;
c) selectively;
d) continuous.
4. The statistical population - is:
a) Any substantive set of phenomena
nature and society;
b) A set of elements with common features;
c) the mathematical set.
5. Growth rate:
a) is the ratio of two values \u200b\u200bof a number of speakers;
b) determined by dividing the value of a number of dynamics - to another;
c) All options are correct;
d) All of the options are not true.
6. If the growth rate is equal to the value of 1.8:
a) a positive growth rate;
b) The rate of increase is negative;
c) the growth rate is zero.
7. Will the arithmetic mean if all the weights are reduced by a constant value:
a) Will; b) does not change;
etc.