HSC Commerce इयत्ता १२ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Business Mathematics and Statistics

State any two merits for systematic random sampling

Using the following Tippet’s random number table

Draw a sample of 10 three-digit numbers which are even numbers

 A wholesaler in apples claims that only 4% of the apples supplied by him are defective. A random sample of 600 apples contained 36 defective apples. Calculate the standard error concerning of good apples

A sample of 1000 students whose mean weight is 119 lbs (pounds) from a school in Tamil Nadu State was taken and their average weight was found to be 120 lbs with a standard deviation of 30 lbs. Calculate the standard error of the mean

A random sample of 60 observations was drawn from a large population and its standard deviation was found to be 2.5. Calculate the suitable standard error that this sample is taken from a population with standard deviation 3?

In a sample of 400 population from a village 230 are found to be eaters of vegetarian items and the rest non-vegetarian items. Compute the standard error assuming that both vegetarian and non-vegetarian foods are equally popular in that village?

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A ______ may be finite or infinite according as the number of observations or items in it is finite or infinite

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A ______ of statistical individuals in a population is called a sample

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A finite subset of statistical individuals in a population is called ______

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Any statistical measure computed from sample data is known as ______

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A ______ is one where each item in the universe has an equal chance of known opportunity of being selected

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A random sample is a sample selected in such a way that every item in the population has an equal chance of being included

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Which one of the following is probability sampling

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In simple random sampling from a population of units, the probability of drawing any unit at the first draw is

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In ______ the heterogeneous groups are divided into homogeneous groups

Explain the types of sampling

Write short note on sampling distribution and standard error

Determine the standard error of proportion for a random sample of 500 pineapples was taken from a large consignment and 65 were found to be bad

A sample of 100 students is drawn from a school. The mean weight and variance of the sample are 67.45 kg and 9 kg. respectively. Find (a) 95% (b) 99% confidence intervals for estimating the mean weight of the students

Define Time series