Test - "Statistics"

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Test - "Statistics" - 100 questions

Question 1. Statistics - is:
a) The science dealing with the collection and processing of various types of information;
b) special mathematical methods of analysis of the various phenomena;
c) a special section of mathematics.

Question 2. Mathematics in the statistics - is:
a) section allows you to perform mathematical calculations;
b) research tool;
c) the probability theory and problems of mathematical statistics.

Question 3. Statistics studies:
a) the properties of homogeneous mass phenomena;
b) the quantitative aspect of socio-economic phenomena;
c) the carriage of goods and passengers.

Question 4. Locate the stages of statistical research in the right order:
1 - statistical calculations;
2 - statistical observations;
3 - statistical summary;
4 - the wording of the job;
5 - summarizing;
6 - group statistics.
(In the form of answers to record six-digit numbers, numbers which correspond to those from the condition, indicating stages of statistical research, and are arranged in such a manner that you think best.)

Question 5. Two freight trains, both in length of 250 m, are going to meet each other at the same average speed of 60 km / h.
How many seconds pass after machinists met, before the guards will meet the last car?

Question 6. As a result, inflation for the first year of the price of goods increased by 2 times the previous year, and for the second year is 3 times the level of the previous year. What is the average growth rate of prices for the year? (The answer to the nearest hundredth).
We use the formula to calculate the geometric mean:

Question 7. After 3/8 the length of the bridge AB, people heard the signal of the car approaching the bridge at an average speed of 60 km / h. If people run back, then meet with the car at point A if run forward, then the car will catch him at point B. As this man quickly runs (km / h)?


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