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Name some modern industries which were in operation in our country at the time of independence.
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The unit of the correlation coefficient between height in feet and weight in kgs is ______
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The range of simple correlation coefficient is ______
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Why is r preferred to covariance as a measure of association?
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Does correlation imply causation?
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‘The Government and policy makers use statistical data to formulate suitable policies of economic development’. Illustrate with two examples.
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"You have unlimited wants and limited resources to satisfy them." Explain this statement by giving two examples.
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How will you choose the wants to be satisfied?
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What are your reasons for studying Economics?
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Statistical methods are no substitute for common sense. Comment with examples from your daily life.
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There are many sources of data.
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Data collected by an investigator is called secondary data.
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There is a certain bias involved in the non-random selection of samples.
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Non-sampling errors can be minimized by taking large samples.
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In a village of 200 farms, a study was conducted to find the cropping pattern. Out of the 50 farms surveyed, 50% grew only wheat. What is the population and the sample size?
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Give two examples each of sample, population and variable.
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Which of the following methods give better results and why?
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Which of the following errors is more serious and why?
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Suppose there are 10 students in your class. You want to select three out of them. How many samples are possible?
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Discuss how you would use the lottery method to select 3 students out of 10 in your class?
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