1. A subset of a population selected to represent the population is a a. Subset
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Question
1. A subset of a population selected to represent the population is a a. Subset b Sample c. small population d. None of the alternative answers is correct. 2. The purpose of statistical inference is to provide information about the a. sample based upon information contained in the population b. population based upon information contained in the sample population based upon information contained in the population c. d. mean of the sample based upon the mean of the population 3. A simple random sample of size n from a finite population of size N is a sample selected such that each possible sample of size a N has the same probability of being selected b. n has a probability of 0.5 of being selected n has a probability of 0.1 of being selected c. d. n has the same probability of being selected 4. A numerical measure from a population, such as a population mean, is called a. a statistic b. a parameter c. a sample d. the mean deviation 5. A sample statistic, such as f, that estimates the value of the corresponding population parameter is known as a. point estimator b. Parameter c. population parameter d. Both a parameter and a population parameter are correcet. 6. A probability distribution for all possible values of a sample statistic is known asa a. sample statistic b. Parameter c. simple random sample d. sampling distribution 7. The expected value of the random variable F is a. b. the standard error c. the sample size d. AExplanation / Answer
1) The parameter of the population is estimated using the sample estimate the statistic from the part of the population that is called a sample. For example the sample statistic sample mean is used to estimate the population mean which is the parameter.
Therefore a subset of the population selected to represent the population is called the sample.
2) The purposeof statistical inference is to get information like estimating a parameter for the population like the population standard deviation.
Therefore b is the correct answer here.
3) In a simple random sampling each of the point in the population has an equal chance of being selected.
Therefore a is the correct answer here.
4) The numerical measure from population is called a parameter while from a sample is called a statistic
Therefore b is the correct answer here.
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