Statistics can be defined as the method of collection and analysis of data in such a way as to minimize any uncertainty in the conclusion drawn from the data so as to be able to assess the degree of such uncertainty. It could be observed from the above definition that statistical analysis‚ error could arise but statisticians need to minimize such errors so as to be able to achieve a desirable result. Also statistics can be said to be; a branch of mathematics that deals with the collection‚ organization
Premium Journalism Statistics Mass media
Name: ____________ Date: ______________________________________________________________________________ □ EXERCISE 31 1. What are the two groups whose results are reflected by the t ratios in Tables 2 and 3? The two groups with results on the effects on cardiovascular risk factors and the programs effective on health behavior have paid t-ratios 2. Which t ratio in Table 2 represents the greatest relative or standardized difference between the pretest
Premium Standard deviation Statistics Statistical significance
G036 * Yes because the p-value is less than 0.05 or No‚ because the p-value is greater than 0.05 * The coefficient of variation is the standard deviation of a data set‚ divided by the mean of the same data set. * Z score = x -ms * The Independent part is what you‚ the experimenter‚ changes or enacts in order to do your experiment. The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable
Premium Normal distribution Statistics Student's t-test
GMB 713 PROBLEM SET NO. 2 PROBLEM SOLVING: Solve the following problems. Show all pertinent solutions. 1. A car battery dealer is trying to determine which of the brands of car battery he is selling has a longer life span. He conducted an investigation by interview his customers and was able to get the following results: Brand X Brand Y Mean life span 4.5 years 4.9 years Standard deviation
Premium Arithmetic mean Standard deviation Problem solving
Q-1 STATISTICS PLAYS A VITTAL ROLE IN ALMOST EVERY FACET OF HUMAN LIFE.DECRIBE THE FUNCTIONS OF STATISTIC.EXPLAIN THE APPLICATION OF STATISTICS. ANS- MEANING OF STATISTICS- ACCORDING TO SELIGMAN “STATISTIC IS A SCIENCE WHICH DEALS WITH THE METHOD OF COLLECTING‚ CLASSIFYING‚ PRESENTING‚ COMPARING & INTERPRETING THE NUMERICAL DATA TO THROW LIGHT ON ENQUIRY.” ACCORDING TO CROXTON & COWDEN- “STATISTICS IS THE SCIENCE OF COLLECTION‚ PRESENTATION‚ ANALYSIS & INTERPRETATION OF NUMERICAL DATA FROM LOGICAL
Premium Statistics
12/21/2013 VIETNAM NATIONAL UNIVERSITY – HOCHIMINH CITY INTERNATIONAL UNIVERSITY SCHOOL OF BUSINESS ADMINISTRATION ------o0o------ CHAPTER 14: CHI-SQUARE TESTING STATISTICS FOR BUSINESS TAs: Vo Vuong Van Anh‚ Le Phuoc Thien Thanh‚ and Le Nhat Ho December 21‚ 2013 TABLE OF CONTENTS • PART I: CHI-SQUARE TESTING FOR GOODNESS-OF-FIT. • PART II: CHI-SQUARE TESTING FOR NORMAL DISTRIBUTION. • PART III: CHI-SQUARE TESTING FOR INDEPENDENCE. December 2013 Powered by Vo Vuong Van Anh 2 1 12/21/2013
Premium Normal distribution Standard deviation Statistical hypothesis testing
Descriptive and Inferential Statistics Paper PSY 315 Descriptive and Inferential Statistics Whether doing original research or conducting literature reviews‚ one must conclude what a powerful and versatile tool statistics are in the hands of researchers. From basic statistics such as data description‚ to using complex statistical methods to foresee future patterns or strengthen scientific claims about current climates‚ the role of statistics in research cannot be taken lightly and is essential
Premium Statistics Scientific method
Final Project PGA Tour Statistics Group 1 Statistics BUS 315 Business Statistics For California Baptist University Dr. Nathan Lewis III June 26‚ 2013 Certification Page I certify I participated in the solution of this exam with the other members of my group and I was responsible for Problem #5‚ The Powerpoint‚ the Executive Summary‚ a portion of the Interpretation of Statistics‚ and the compilation of the group assignment. Brian Myers I certify I participated in the solution of this
Premium Regression analysis Statistics
STATISTICS AND DECISION-MAKING IN HRM (word count 1155) The word statistics has a Latin origin where the word status means state. Statistics is defined as the science that helps us understand how to collect‚ organize and interpret numbers or other information (data) about some topic (Bennett‚ et al.‚ 2003). It is a discipline of data collection and summarizing to aid understanding and decision-making. It is also concerned with evaluation of the present status and predicting the future (Stockberger
Premium Statistics Management Data
hypothesis. It represents researcher’s claim about the population parameters. This will be accepted only when data provides sufficient evidence to establish its truth. 3. Test Statistic - A sample statistic (often a formula) that is used to decide whether to reject H0 . 4. Rejection Region- It consists of all values of the test statistic for which H0 is rejected. This rejection region is selected in such a way that the probability of rejecting true H0 is equal to α (a small number usually 0.05). The value
Premium Statistical hypothesis testing Null hypothesis Statistics