Module Overview

Introduction to Statistics

The aim of this module is to develop an ability to apply probabilistic and statistical ideas in simple business settings.

Module Code

STAT H1004

ECTS Credits


*Curricular information is subject to change


The role of statistics as a decision support tool. Types of data, sampling, simple random samples, other forms of sampling surveys and observational studies, simple comparative experiments. Sources of secondary data in Ireland

Descriptive Statistics

Frequency distributions. Graphs. Measures of location and dispersion. Skewness. Statistical software packages such as Excel, Minitab and SPSS.

Basic Probability Theory

Definition of probability as relative frequency, basic properties of probability, estimating probabilities empirically; the rules of probability.

Probability Distributions

Definition of random variable, using probability distributions of random variables as models; Discrete probability distributions including the Binomial and Poisson probability distributions; Continuous probability distributions including the Uniform and Normal distributions.

Sampling Distributions and Interval Estimation

Sampling distribution of mean and proportion. The Central Limit Theorem. Point estimates, confidence intervals and upper and lower bounds for the population mean and population proportion, determining the sample size for a given level of precision.

Hypothesis Testing

Logic of hypothesis testing, null and alternative hypotheses, Type I and Type II errors, test statistic and critical value, region of acceptance; Test of population mean, test of population proportion.

Module Content & Assessment
Assessment Breakdown %
Other Assessment(s)40
Formal Examination60