Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Sampling and tests of significance are very important tools in business economics. In fact one cannot do any meaningful marketing research without the requisite knowledge of sampling techniques.Any collection (usually large) of individuals or objects is called a population or universe.A finite subset of a population is called a sample. The number of individuals in a sample is called the sample size. 1. Random Sampling: When a sample is taken in such a way that each member of the population has the same probability of being selected, the sample so obtained is called a random sample and the technique is called random sampling. 2. Simple Sampling: It is a special case of random in which each event has the same probability of success and the probability of an event is independent of the success or failure of event in the preceding trails. Thus, simple sampling is a random sampling in which the trails are independent and the probability of success is constant. 3. Large and the small sample: Sample of size n > 30 is called large samples and samples of size n ≤ 30 is called small samples. 4. Hypothesis: In order to make certain decisions about a population on the basis of sample information, some assumption is made about the population. Such assumption, which are not necessarily true, are called statistical hypothesis. 5. Null Hypothesis: The hypothesis tested for possible rejection under the assumption that it is true, is called the null hypothesis. 6. Parameters and Statistics: The Statical constants of the population viz., mean (μ), variance (σ2), etc., are usually referred to as parametrs. The statistical measures computed from the sample observations above, e.g., mean X¯, variance (s2), etc., are called statistics. 7. Level of significance : We are not introducing binomial statement and Normal distribution in this introductory book .The following statements may be taken as given: (i) Normal distribution is the limiting case of the binomial distribution. When n -> α (i.e., the number of trials is indefinitely large) and neither P nor q is very small. (ii) The vitiate Z is defined by
why does the quantity of salt demanded tend to be unresponsive to change in its price?
Define the effectiveness of World Bank in promotion of development? The World Bank has a clear set of goals: to assist countries meet the UN Millennium Development Goals. A ma
Why do state approaches work into promoting development? State planning and intervention is desirable due to the shortcomings of markets. The approaches range of state through
Sampling and tests of significance are very important tools in business economics. In fact one cannot do any meaningful marketing research without the requisite knowledge of sampli
Define the using influences of contract staff for IS project. Use of contract staff: Such are frequently an unknown quantity. It is reasonable to assume that people who
1. Imagine that two countries, Richland and Poorland can produce just two goods, computers and coal. Assume that for a given amount of land and capital, the output of these two pro
Difference between gross barter and net barter terms
There are some examples to government act upon of dip recession. Number of unemployment last long years in companies and take away labour in order to decreased pressure on expen
Define the implications of dependency problem. Implications of dependency problem: To escape exploitation, underdeveloped countries should gain political, economic and so
What does Rostow predict? For Rostow: • Savings and capital accumulation (formation) are central to the procedure of growth therefore development • The solution to de
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd