StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...

Fundamentals of Hypothesis Designing and Testing - Essay Example

Cite this document
Summary
Scientific investigators, industrial engineers and market researchers among others, often have hypotheses about particular facets of their work…
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER95.8% of users find it useful
Fundamentals of Hypothesis Designing and Testing
Read Text Preview

Extract of sample "Fundamentals of Hypothesis Designing and Testing"

Download file to see previous pages

Definition: A statistical hypothesis is an assertion regarding the distribution of a variable or variables. If a statistical hypothesis completely specifies the distribution, it is referred to as a simple hypothesis; if not, it is referred to as a composite hypothesis (Goodman, 1999). The testing of a statistical hypothesis is the application of an explicit set of rules for deciding whether to accept the hypothesis or to reject it (Hinkelmann & Kempthorne, 2008). The method of conducting any statistical hypothesis testing can be outlined in six steps: The alternative hypothesis, which we denote by H1, expresses the idea of some difference.

Alternative hypotheses may be one or two sided (Kaye & Freedman, 2011). Usually, the setting of the problem determines the alternative even before the data has been collected. • Type II error: Reject H1 whilst factual; the chance of making a type II error is symbolized by {3. The objective in all hypothesis testing is to set the Type I error level, also known as the significance level, at a low enough value, and then to use a test statistic which minimizes the Type II error level for a given sample size.

As we fix the Type I error level, it is best to devise the test in a way that the Type I error is most serious, in terms of cost (Lehmann & Romano, 2005). A critical P -value is the probability that is set by the person doing the test; it is the threshold for the P-value that the tester will use to decide whether the sample is unusual enough, compared to the hypothesized population, to indicate that the null hypothesis should be turned down in favor of the other option (McCloskey & Stephen, 2008).

The calculated test statistic is compared to the sampling distribution that the statistic would have if the null hypothesis was factual. The comparison is summarized into a probability called a P-value: this is the probability, if the null hypothesis is factual, that the statistic would be at

...Download file to see next pages Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Fundamentals of Hypothesis Designing and Testing Essay”, n.d.)
Fundamentals of Hypothesis Designing and Testing Essay. Retrieved from https://studentshare.org/business/1615206-fundamentals-of-hypothesis-designing-and-testing
(Fundamentals of Hypothesis Designing and Testing Essay)
Fundamentals of Hypothesis Designing and Testing Essay. https://studentshare.org/business/1615206-fundamentals-of-hypothesis-designing-and-testing.
“Fundamentals of Hypothesis Designing and Testing Essay”, n.d. https://studentshare.org/business/1615206-fundamentals-of-hypothesis-designing-and-testing.
  • Cited: 0 times

CHECK THESE SAMPLES OF Fundamentals of Hypothesis Designing and Testing

The Different Research Methods

For instance, a quantitative research approach can consider data collection through surveys by designing the questionnaire, telephonic interview, hall tests, door to door interviews and product placements, among others.... The paper "The Different Research Methods" suggests that research methodology needs to be structured with research philosophy, research tradition....
9 Pages (2250 words) Essay

Research method/types

Quantitative research This kind of research involves the collection as well as presentation of numerical data that can undergo codification and be subjected to in depth statistical testing (Brannen).... Quantitative research This kind of research involves the collection as well as presentation of numerical data that can undergo codification and be subjected to in depth statistical testing (Brannen).... Data is collected and analyzed to test a particular hypothesis....
4 Pages (1000 words) Essay

Business Success Is Customer-Driven

The National Summary of U.... .... flights for 2007 pegs the number of airline passengers at 660 million.... By January 2008, this figure has risen to 679 million (Bureau of Transportation Statistics,… In 1995, the average domestic airfare was $288 but by 2007, the average price has reached $328 (Bureau of Transportation Statistics, 2008)....
15 Pages (3750 words) Essay

External, Internal, and Construct Validity

Research and testing play a crucial role in modern lives and it is essential to comprehend that researches are mainly concerned with the relationship between variables.... Thus, construct validity may be defined as “the extent to which the theoretical constructs of treatment, outcome, population, and setting have been successfully opearionalized,” and external validity as “the extent to which the effects we observe among operationalized constructs can be generalized to theoretical constructs other than those specified in the original research hypothesis,” whereas internal validity is “the extent to which the detected effects...
4 Pages (1000 words) Essay

Participant Observation, Social Desirability and Operational Definition

The paper "Participant Observation, Social Desirability, and Operational Definition" will begin with the statement that Participant Observation is a humanistic as well as a scientific method that produces a kind of experiential knowledge that allow a researcher talk convincingly.... hellip; According to the findings, it can, therefore, be said that Participant Observation as the method of fieldwork produces effective and positive knowledge and it involves getting very close to people and making them feel comfortable with researcher's presence so that he can observe and record information about their lives....
12 Pages (3000 words) Assignment

Error-Correcting Output Codes

For instance, designing of combined classifiers, ECOC provides diversified classifiers by means of dichotomies that result in accurate classification.... Therefore, Error-Correcting Output Codes has been an essential computer technology and information development, since it is used in many applications for multiple data classification and designing of combined classifiers for effective data recognition....
9 Pages (2250 words) Coursework

Experimental and Non-experimental Quantitative Research Approaches

This is accomplished by formulating a hypothesis and then evaluating that hypothesis through observation of specific elements and aspects of interest (Macnee & McCabe, 2012).... The purpose of the paper is to compare and contrast experimental and non-experimental quantitative research approaches....
14 Pages (3500 words) Assignment

Electromagnetic Effects in the Vicinity of an Active Wind Farms

… Introduction Researches on Wind Farms and human health effects have continued to grow in the recent years.... Particular focuses have been put on issues such as shadow flicker, noise and electromagnetic effects of wind farms.... Studies such Nomura et al.... Introduction Researches on Wind Farms and human health effects have continued to grow in the recent years....
10 Pages (2500 words) Coursework
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Contact Us