ABSTRACT

Samples of primary data may be extracted for other purposes. This is known as secondary data.

The data collected from the questionnaires or publications may be aggregated using a tally chart. For example, in a survey, 25 people shopping in a DIY store were asked about the type of house/building they lived in. Their response was: semi-detached (semi), detached, terraced, semi, bungalow, flat, detached, flat, terraced, semi, bungalow, flat, semi, terraced, detached, semi, bungalow, flat, terraced, semi, detached, flat, flat, semi, terraced. The five types of accommodation are entered in the tally chart as shown in Table 16.1. To make the totalling easier and less confusing, the numbers are grouped in fives, four vertical bars and the fifth a

LEARNING OUTCOMES:

16.1 Introduction

16.2 Tally charts

Tally charts may also be used for recording other data, for example traffic counts.