Chapter-11 Testing of Hypothesis: (Non-parametric Tests) Chapter-11: Testing of Hypothesis - (Non-parametric Tests) 2 11.1. Chi - square ( χ )Test / Distribution 2 11.1.1. Meaning of Chi - square ( χ )Test 2 11.1.2. Characteristics of Chi - square ( χ )Test 2 11.2. Types of Chi - square ( χ )Test / Distribution 2 11.2.1. Chi - square ( χ )Test for Population Variance 2 11.2.2. Chi - square ( χ )Test for Goodness-of-Fit 2 11.2.3. Chi - square ( χ )Test or Independence
Premium Statistical tests Statistics Normal distribution
A hypothesis is a claim Population mean The mean monthly cell phone bill in this city is μ = $42 Population proportion Example: The proportion of adults in this city with cell phones is π = 0.68 States the claim or assertion to be tested Is always about a population parameter‚ not about a sample statistic Is the opposite of the null hypothesis e.g.‚ The average diameter of a manufactured bolt is not equal to 30mm ( H1: μ ≠ 30 ) Challenges the status quo Alternative never contains
Premium Statistics Arithmetic mean Statistical hypothesis testing
• 2 hypothesis of heredity o “Blending” hypothesis: you are a mixture of genetic information from your parents. (bucket of paint) o “Particulate” hypothesis: you receive discreet packets of genetic information‚ passed on undiluted to future generations. (bucket of marbles) • Mendelian genetics o Character: inheritable feature‚ i.e.‚ fur color o Trait: variant for a character‚ i.e.‚ brown o True-bred: all off-spring of same variety o Hybridization: crossing of two different true-breds o P
Free Genetics Allele Gene
“Accept” the Null Hypothesis by Keith M. Bower‚ M.S. and James A. Colton‚ M.S. Reprinted with permission from the American Society for Quality When performing statistical hypothesis tests such as a one-sample t-test or the AndersonDarling test for normality‚ an investigator will either reject or fail to reject the null hypothesis‚ based upon sampled data. Frequently‚ results in Six Sigma projects contain the verbiage “accept the null hypothesis‚” which implies that the null hypothesis has been proven
Premium Statistical hypothesis testing Type I and type II errors Null hypothesis
Nov. 21‚ 2012 (Gandeza Honelyn) Ecology 2:30-5:30 The Gaia Hypothesis A Goddess of the earth: "The Gaia hypothesis says that the temperature‚ oxidation state‚ acidity‚ and certain aspects of the rocks and waters are kept constant‚ and that this homeostasis is maintained by active feedback processes operated automatically and unconsciously by the biota." - James Lovelock‚ The Ages of Gaia It often seems obvious that life on earth lives at the mercy
Premium Life Evolution Homeostasis
conducted to see if a correlation could be made between social media usage and comprehension skills the following morning. Two test groups were selected. Test group A spent less than one hour on social media while test group B spent an hour or more. The hypothesis states that test results from group A would show significant difference on their level of performance considering their access to social media was limited. The results proved otherwise. There were no significant correlations that linked either one
Free Sleep
market. One successful strategy is cause-related marketing. Partnership with a worthwhile cause attracts consumers‚ who when faced with roughly equal products or services‚ choose one that has an impact on an issue they care about. The Cause Marketing Halo Awards are American cause marketing’s highest honor. Women’s Health/Breast Cancer Initiative: Kohl’s Corp. and the American Cancer Society‚ Midwest Division‚ and the Southeast Wisconsin affiliate of Susan G. Komen for the Cure. Arctic Home: Coca-Cola
Premium Cancer Marketing American Cancer Society
good-genes and sexy-sons hypotheses focus on direct benefits associated with female choice. The good-genes hypothesis proposes that a female will choose to mate with males that they believe will produce better offspring. Typically this decision is based off a phenotypic trait that is an sign of higher genetic fitness‚ however sometimes these traits are not good indicators. The sexy-sons hypothesis is similar however it posits that females will choose the most attractive males to mate with so that those
Premium Marriage Polygamy Family
MM Hypothesis – A Critique The assumptions of MM hypothesis are unrealistic and untenable in practice. As a result‚ the conclusions that dividend payment and other methods of financing exactly offset each other and hence‚ the irrelevance of dividends‚ is not a practical proposition; it is of merely theoretical relevance. The validity of MM approach is open to question on two counts: 1. Imperfection of Capital market 2. Resolution of uncertainty Market Imperfection MM assume that capital markets
Premium Dividend Cost Economics
The Halo That Would Not Light presents a theme of maturing and the way one rushes through childhood‚ but no one realizes the true meaning of childhood until they can no longer return to it. “As certain and indivisible as red scarves silking endlessly from a magician’s hollow hat and the spectacular catastrophe of your endless childhood is done.” Red scarves are sure to come from a magician’s hat during a magic show just as your childhood is sure to end one day. Your childhood is spectacular yet catastrophic
Premium English-language films Mother Debut albums