Probability, Statistics and Random Processes

9

Estimation

Prerequisites

Before you start reading this unit, you should:

• Know normal tables and calculating z from the tables
• Know the previous units on sampling theory
• Know calculation of mean and standard deviation for a data

Learning Objectives

After going through this unit, you would be able to:

• Know the necessity of estimation and differentiate between point and interval estimates
• Know the criteria of a good estimator
• Know the procedures involved in constructing confidence intervals for sample means, proportions, difference of means, and difference of proportions
• Determine the sample size in estimation
• Determine the maximum error in estimating sample mean or sample proportion

INTRODUCTION

The theory of statistical inference consists ...