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 ...

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