What is inference, Basic Statistics

Assignment Help:

Q. What is Inference?

Ans.

Inference is the process of deriving conclusions based on facts or premises. We often make inferences based on the results of statistical studies.

For example, suppose a study found that a sample of American teenagers surf the web an average of 4 hours per night. What can we deduce about the population (all American teenagers) from which this sample was taken? Based on this sample, what estimate can we make about the average time all American teenagers surf the web?

First of all, before making any inferences, it is important to analyze the sample population and the sample data carefully. Are there unforeseen correlations between people in the sample? Does every person in your sample of American teenagers own their own computer? If so, then your sample data will be biased because not every household in America has a computer in it.

Let's assume your sample population is a good representation of American teenagers. There are still questions to consider before making inferences. Was the sample data collected during a typical week? Was the Internet atypically slow due to high traffic volume resulting in longer wait times? Were the teenagers from your sample in school or on summer vacation?


Related Discussions:- What is inference

Predetermined rates, #questKody Corporation uses a job-order costing system...

#questKody Corporation uses a job-order costing system with a plantwide overhead rate based on machine-hours. At the beginning of the year, the company made the following estimates

Time quantization and amplitude quantization, A sine wave is sampled at int...

A sine wave is sampled at interval Tand quantixed using N=2bits precision over the range ±1. The sine wave has peroid τ, and T is chosed such that T = 1/8τ Plot one cycle of the

Statistic, any of your writer able to use the database given to generate th...

any of your writer able to use the database given to generate the null, alternative..etc.. into a power point presentation

IFRS, I am currently doing a report on IRFS and have to identify the the is...

I am currently doing a report on IRFS and have to identify the the issues involved with businesses adopting IRFS

Illustrative statistics with statistics, Company statistics is the technolo...

Company statistics is the technology of good selection in the face of concern and is used in many professions such as financial statistics, econometrics, auditing, generation and f

What is budget control, Definition of budget control as management of costs...

Definition of budget control as management of costs & expenses with examples. Budget control is the management of costs & expenses in accordance with an underlying budget.

Index numbers, discuss the considerations to be borne in mind when construc...

discuss the considerations to be borne in mind when constructing index numbers

Evaluate the probabilities, Problem: a. According to a Business week po...

Problem: a. According to a Business week poll of 1035 adults, 40% of those surveyed agreed strongly with the proposition that business has too much power over American life (B

calculate the chi-square statistic, The table below shows a breakdown of w...

The table below shows a breakdown of women between the ages of 20 to 64 who have had a Pap smear--it shows the number in each age group cross tabulated with the time of their last

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