Parametric and non-parametric stats tests, statistics, Basic Statistics

Assignment Help:
What is the difference between parametric and non-parametric stats tests?
Different kinds or levels of data need to be analysed using different kinds of stats tests. The basic distinction between using a parametric or non-parametric test is between simple data:
Nominal – this means “named” data such as male/female, adult/juvenile, or tallies/counts of data such as the number of students taking maths at a college.
Ordinal – this means that your data is ordered in some simple way such as sea lions being classified as small, medium and large;
and complex data:
Interval – this is the same as ordinal data except that we know, for example, the actual length of small, medium and large sea-lions.
Ratio – this is the same as interval data except that it must make sense to have zero of the variable being measured. For example it is quite possible to get zero out of 20 in a math test but you cannot have zero personality, or zero height.

You also need to consider the distribution of your data before deciding upon a stats test. To use a parametric test data need to be normally distributed (form a bell shaped curve when plotted) – you can get your stats software programme to plot data for you, and check that the “skew” and “kurtosis” equal 1. If the data are not normally distributed and the skew and kurtosis do not equal 1 then you need to use a non-parametric test.

Related Discussions:- Parametric and non-parametric stats tests, statistics

Comparing Two Samples, Ask qComparing Two Samples: 1. Apply the function "p...

Ask qComparing Two Samples: 1. Apply the function "plot" to the formula that relates the response "frequency" to the explanatory variable "march2007" in order to produce the two bo

Domain, select and list five items used to sample the domain in childhood o...

select and list five items used to sample the domain in childhood obesity

T TEST and chi square test, Course of Study MBA 10% B.Tech 90% BBA 0% Diplo...

Course of Study MBA 10% B.Tech 90% BBA 0% Diploma 0% Annual College Fee 25,000-30,000 0% 40,000-50,000 10% 85,000-90,000 90% 90,000 Above 0% Taken an Education Loan Yes 100

Definition of brokerage based question, Definition of brokerage is termed a...

Definition of brokerage is termed as a fee paid to a broker for services. BROKERAGE is a fee which is paid to the broker for his/her services to act as an intermediary between the

Graph, Difference between Historigrams and Histogram

Difference between Historigrams and Histogram

Writing Appropriate Null and Alternative Hypotheses, For this assignment, y...

For this assignment, you will practice creating null and alternative hypotheses of difference based on the presented scenarios. To complete this assignment, consider the three scen

Define Ancillary costs, Define Ancillary costs Expenditures that is direct...

Define Ancillary costs Expenditures that is directly attributable to resource acquisition, such as freight and transportation costs, site preparation costs, and professional charg

Velocity, A car moves with constant velocity along a straight road. Its pos...

A car moves with constant velocity along a straight road. Its position is x1 = 0m at t1 = 0 seconds and is x2 = 56 m at t2 = 5.0 s. what is the cars position at t=2.5 seconds and

Survival analysis and regression for rates, This assignment counts for 40% ...

This assignment counts for 40% of the total grade for the subject.  There are 100 marks for the assignment.  Including figures and tables, it should be no more than 10 pages. Yo

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd