Tutorial and Lecture notes

Tutorial and Lecture notes - ISMT 111 BUSINESS STATISTICS...

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1 ISMT 111 B USINESS S TATISTICS T UTORIAL 1 created by Andrew Yam Types of Data § Qualitative/Categorical data a) Nominal Data - no natural order between the categories, e.g. gender b) Ordinal Data - order exists, e.g. size (S,M,L) § Quantitative/Numerical data a) Discrete data - e.g. number of people in a classroom b) Continuous data - e.g. height and weight Graphical Methods for describing data § Qualitative/Categorical data Example 1 Data set: A C A E A A F B E C F B F B F C D D E D D A D A C E C B B F B D B F E B A D D D A C D C D D C D F B C B C B C B F B A C a) Frequency Distribution X Count Cum. Count Percentage Cum. Percentage A 9 9 15.00 15.00 B 13 22 21.67 36.67 C 12 34 20.00 56.67 D 13 47 21.67 78.33
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2 E 5 52 8.33 86.67 F 8 60 13.33 100.00 N 60 100 b) Pie Chart c) Bar Chart § Quantitative/Numerical data Pie Chart of X F 13.33% E 8.33% D 21.67% C 20.00% B 21.67% A 15.00% Bar Chart of X 0 5 10 15 A B C D E F X Frequency
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3 Example 2 Data set: 14 63 75 80 93 27 65 75 81
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Tutorial and Lecture notes - ISMT 111 BUSINESS STATISTICS...

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