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ILLUSTRATION 2.2<br />

EXAMPLE OF A GRADING AND MARKING SCHEME<br />

Grade Mark<br />

A 75–100<br />

B 65–74<br />

C 55–64<br />

D 50–54<br />

E 45–49<br />

F 35–44<br />

G 0–34<br />

The different bands refer to qualitative differences in performance. For example,<br />

grade A means ‘excellent’. But what do the marks mean? Note that the grades refer<br />

to bands of marks of unequal size (Illustration 2.3).<br />

Although we have a numerical scale from one to one hundred, we do not have<br />

standard units. Compare two essays marked ten and thirty with another two essays<br />

marked fifty and seventy. The former are in the same grade—that is, have the same<br />

meaning, ‘bad fail’—the latter are separated by two grades, and therefore have<br />

different meanings. As marks in some grades are given more weight than marks in<br />

others, it would be misleading to average marks to determine overall performance. Yet<br />

once performance is measured in terms of marks, the temptation to do just that may<br />

be overwhelming, even if the interpretation of such an average must be obscure!<br />

ILLUSTRATION 2.3<br />

GRADES WITH DIFFERENT MARK BANDS<br />

Grade Mark band<br />

G 35<br />

A 25<br />

B & C & F 10<br />

D & E 5<br />

WHAT IS QUALITATIVE DATA? 27<br />

To interpret <strong>data</strong> in social research, it may be more important to use meaningful<br />

categories than to obtain precise measures. As a category ‘forty years old’ is not<br />

especially meaningful (except perhaps to forty-year-olds!) and age <strong>data</strong> organized

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