Why should a researcher do a normality, Marketing Research

Assignment Help:

Why should a researcher do a normality and outliers' assessment before hypotheses testing?

Answer

To conduct many advance statistical techniques, researchers have to presume that data provided is normal (means it's symmetrical on a bell curve) and free of outliers. In general terms, if data was plotted on a bell curve, highest number of data points would be available in the middle and the data points would reduce on either side in a proportional fashion as we move away from the middle. Normality and outliers analysis offers clarity with regard to fundamental assumption of many advance statistical techniques. Skewness and kurtosis analysis can provide some idea with regard to normality. Positive skewness values suggest clustering of data points on the low values (left hand side of the bell curve) and negative skewness values suggest clustering of datapoints on high values (right hand side of bell curve).

Positive kurtosis values suggest that datapoints have peaked (gathered in centre) with long thin tails. Kurtosis values below 0 suggest that distribution of datapoints is comparatively flat (i.e. too many cases in extreme). In a way, without normality and outlier's assessment researcher may get false results which might result in wrong conclusion and decision making.

 


Related Discussions:- Why should a researcher do a normality

Explain about the specific information questions, Explain about the specifi...

Explain about the specific information questions The specific information questions are questions directly associated with research objectives. They mostly involve numerous sca

Risk as an exporter, Risk as an Exporter : you may draw your export bill...

Risk as an Exporter : you may draw your export bills either in rupees or in foreign currencies. If you have drawn your export bills in Indian currency i.e., rupees, you will not

Converting management dilemma into research, When converting management dil...

When converting management dilemma into research questions, what issues should be considered and why? Answer A manager when faced with a dilemma is surrounded by numerous

Introduction-exchange control, INTRODUCTION : Exchange Control is another ...

INTRODUCTION : Exchange Control is another important area of international trade. The term exchange control applies to the rules and regulations designed to regulate transactions

Internal strengths-internal weaknesses & benefit, Consider the needs of you...

Consider the needs of your community and the world around you through the eyes of a social marketer. To this end, choose a social, environmental or health issue (e.g. recycling, sm

Textil, four trends in the macro/market environment that will have or recen...

four trends in the macro/market environment that will have or recently had an influence on textile industry

The impact of online marketing on brand awareness, I have an assignment nee...

I have an assignment needed of 3500 words for mrm a masters student.can you help me with it

Pestel analysis, Ask questionpestel analysis for godrej expert hair colour ...

Ask questionpestel analysis for godrej expert hair colour #Minimum 100 words accepted#

Cost plus pricing, what is cost plus pricing nd give some examples of cost ...

what is cost plus pricing nd give some examples of cost plus pricing?

Discuss the importance of marketing research, Discuss the importance of mar...

Discuss the importance of marketing research report in the overall marketing research process. Answer Marketing research report is the bridge between manager and researche

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