Question: Who invented the Lorenz line?
Answer: Dr Lorenz, a statistician, invented the Lorenz Line.
Question: What is meant by the Quaradic deviation?
Answer: The difference between one-third and one-fourth of the values of the given data is called the inter-quadratic range and half of that difference is called ‘quadratic deviation’.
Question: What is meant by ‘Authentic Deviation?
Answer: The square of the parallel medium of the given information is called ‘authentic deviation’.
Question: Mention the formula for measuring the circumference.
Answer: The formula for measuring the circumference is–
R = L – S
where R = expansion
L = maximum value
S = smallest value.
Question: What is meant by correlation?
Answer: Correlation is a statistical method by which the variability between two or more variables can be studied.
Question: What is meant by positive correlation?
Answer: If two variables move in the same direction at the same time, then such correlation is called ‘positive correlation’.
Question: What is meant by negative correlation?
Answer: When two variables move in opposite directions, the correlation is called a negative correlation.
Question: What are the types of correlation?
Answer: There are three types of correlation, such as– positive, negative and zero correlation.
Question: If the change of two variables is different, then what kind of correlation will there be between the two variables?
Answer: Negative correlation.
Question: Does zero correlation mean uniqueness?
Question: When is the position correlation more accurate than the normal correlation coefficient?
Answer: When the variables cannot be calculated correctly, the correlation coefficient is more accurate than the normal correlation coefficient.
Question: What is an index?
Answer: The sum of statistical tools used to measure the change in the value of the interrelated variables is called ‘index’.
Q: What are the types of indices?
Answer: There are two types of indices. E.g.– Normal and Loaded.
Q: What are the methods of index formation?
Answer: There are two methods of index formation: e.g. aggregate method and relative average method.
Question: What is the relative importance index of content?
Answer: Weighted index.
Question: What are the weights in most indices?
Answer: Base year.
Question: What index is used in general inflation?
Answer: Consumer Price Index.
Question: What is the most weighted item in the consumer price index of an industrial worker?
Question: Whose change is measured by the Consumer Price Index? Statistics Quiz-4
Answer: Retail price. 0 0 0
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