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Stats Means Business - A Guide to Business Statistics -Buglear - (Elsevier, 2001)
Preface vii
Acknowledgements viii
1 Starting up 1
1.1 Numbers in business 2
1.2 How this book is organized 2
1.3 Taking the first steps 4
1.4 Technological support 17
Review questions 20
2 Presenting data 24
2.1 Types of data 25
2.2 Displaying qualitative data 27
2.3 Displaying quantitative data 36
Review questions 56
3 Summarizing univariate data 63
3.1 Measures of location 64
3.2 Measures of spread 79
3.3 Measuring quality and consistency 93
Review questions 94
4 Summarizing bivariate data 102
4.1 Correlation and regression 103
4.2 Summarizing data collected over time 119
Review questions 135
5 Assessing risk 143
5.1 Measuring probability 145
5.2 Different types of probabilities 147
5.3 The rules of probability 151
5.4 Tree diagrams 163
Review questions 165
6 Putting probability to work 172
6.1 Simple probability distributions 173
6.2 The binomial distribution 178
6.3 The Poisson distribution 183
6.4 Expectation 186
6.5 Decision trees 188
Review questions 191
7 Modelling populations 197
7.1 The Normal distribution 198
7.2 The Standard Normal Distribution 205
7.3 Sampling distributions 217
7.4 The t distribution 222
7.5 Choosing the correct model for a sampling
distribution 225
Review questions 225
8 Statistical decision making 232
8.1 Estimation 233
8.2 Estimating population proportions 245
8.3 Hypothesis testing 248
8.4 Testing hypotheses about two population means 260
8.5 Testing hypotheses about population proportions 267
8.6 A hypothesis test for the population median 269
Review questions 271
9 Statistical decision making using bivariate data 278
9.1 Contingency tests 279
9.2 Testing and estimating using quantitative
bivariate data 288
Review questions 305
10 Managing statistical research 312
10.1 Secondary data 314
10.2 Primary data 316
10.3 Presenting your analysis 326
Appendix 1 Statistical tables 331
Appendix 2 Answers and selected worked solutions to review
questions 338
References 359
Index 361
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