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

Transition towards ifrs, Transition towards IFRS Over the last few year...

Transition towards IFRS Over the last few years, there has been a tremendous change in the world's capital markets. There has thus been a shift away from the local financial re

A m, what is the relationship between the variance and the standard deviati...

what is the relationship between the variance and the standard deviation?

statistic assignment, I have statistic assignment can do it at 2.30 H, bec...

I have statistic assignment can do it at 2.30 H, because I don''t have time

Definition of capital lease as a financial arrangement, Definition of capit...

Definition of capital lease in term of financial arrangement whereby a lessee pays rental for asset. Capital lease is a financial arrangement underlying a agreement where a lesse

R programm, 1. Generate a large dataset ( at least 1000 observations) µ wit...

1. Generate a large dataset ( at least 1000 observations) µ with a known mean, µ between 20 and 40 and variance s = 9 using rnorm(). identify it as D. Use the functions mean() and

Management accounting, how cost classification can helpful for planning, co...

how cost classification can helpful for planning, controlling and decision making

Anova, How to interpret Anova

How to interpret Anova

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