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

Statistics for people who hate statistics, what third variable might effect...

what third variable might effect fathers gpa and childs social skills

School based assesment, I need help with ledger accounts and the financial ...

I need help with ledger accounts and the financial statement

Probability, A bag contain 5 white , 7 red and 8 black balls. If four balls...

A bag contain 5 white , 7 red and 8 black balls. If four balls are drawn one by one without replacement, find the probability of getting all white balls.

DATA MINING, please break this problem down to laymen term so that I unders...

please break this problem down to laymen term so that I understand how you arrived at the answer. 1. AllElectronics caries 1000 products, P1, … P1000. Consider customers Ada, Bob,

#measures of central tendency, #what is the importance of measures of centr...

#what is the importance of measures of central tendency to Human resource management

Sequential sampling, Sequential Sampling: This is somewhat complex sample d...

Sequential Sampling: This is somewhat complex sample design where the ultimate size of the sample is not fixed in advance but is determined according to mathematical decisions on t

Time series, importance of time series analysis?

importance of time series analysis?

Automated clearing house (ach) , Automated clearing house (ach) A across ...

Automated clearing house (ach) A across the country settlement and selection program that provides for automated submission and arrangement of resources. Although the phrase Elec

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