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
Suppose that historically, the proportion of people who trade in their old car to a car dealer when purchasing a new car is 48%. Over the previous 6 months, in a sample of 115 new-
What are capacity building policies? Capacity building policies: Capacity building is the development and improvement of institutions. And Capacity building policies as
what is the short run and long run effects of a new idea creating by a restaurateur i.e home cooking services in the perfect competitive market?
How do i come up with a project based on the above topic
Accountants prepare income statements typically in terms of historical costs, in terms of the purchase price, rather than in terms of the current price. The reasons given for this
Currency Option Combinations A currency option combination uses simultaneous call and put option positions to construct a unique position to suit the hedger's or speculator's n
Problem 1: (a) Suppose the government decides to implement a minimum wage to help low-income workers. How will the minimum wage affect the demand for labor and what does this i
You own a small retail business that produces a product that is slightly different from that of your many competitors. Your firm is currently making an economic profit. The absolut
An online stock trading company makes part of their revenue from clients when the clients trade stocks therefore, it is important to the company to have a good idea of how many tra
What is Unbalanced Growth theory? Unbalanced growth shares analysis along with balanced growth theorists which free markets cannot produce development. Planning of government
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