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Business Statistics (BQT 173)

ІМ ќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P. Business Statistics (BQT 173). PM Abdull Halim Abdul Institut Matematik Kejuruteraan Universiti Malaysia Perlis. ІМ ќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P.

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Business Statistics (BQT 173)

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  1. ІМќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P Business Statistics (BQT 173) PM Abdull Halim Abdul Institut Matematik Kejuruteraan Universiti Malaysia Perlis

  2. ІМќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P Business Statistics (BQT 173) Statistics and Data

  3. What is statistics? Basically it is the study of managing data i.e • How to collect data? • How to display the data? • How to analyse the data? Abdull Halim Abdul

  4. Brief history of data collection. • In ancient civilisation (Egyption, Greek and Roman), data on population were collected mainly for the purpose of taxation and warfare. • In 762 data on “description of church-owned properties” were collected by Charlemagne. • In 1068, “Domesday Book” were published. A record of ownership, extend and the value of lands in England. • In the mid of 16th century France started to record the birth, marriage and death of her populations. Abdull Halim Abdul

  5. Type Of Data • Qualitative Data • What is qualitative data? • Quantitative Data • What is quantitative data? Abdull Halim Abdul

  6. Data collection processes • How the data is measured? • How the data is observed? • How the data is collected? Abdull Halim Abdul

  7. Data collection processes • How the data is measured? • Instruments used. • Scale used • Norminal • Ordinal • Interval • Ratio Abdull Halim Abdul

  8. Data collection processes • How the data is observed? • Survey • Interview • Questionnaires • Observations • Experiment Abdull Halim Abdul

  9. Data collection processes • How the data is collected? • Census survey • Sampling • Probabilistics sampling • Simple random sampling • Systematic random sampling • Cluster random sampling • Stratified random sampling • Nonprobabilistics sampling • Convinience sampling • Snowball sampling. Abdull Halim Abdul

  10. What to do to the data. • Exploratory data analysis • Summaries the data • Display the data Example • Statistical analysis. • Test for the hypotheses. • Modelling the relationships between variables • Correlation. Abdull Halim Abdul

  11. ІМќ INSTITUT MATEMATIK K E J U R U T E R A A N U N I M A P Business Statistics (BQT 173) Descriptive Statistics

  12. Descriptive Statistics How the data is described? • Tabular & Graphical Presentation • Numerical Measures (Statistic) Abdull Halim Abdul

  13. Summarizing Qualitative Data Qualitative data are displayed in tabular and charts. Example Abdull Halim Abdul

  14. Summarizing Quantitative Data Quantitative data are displayed in tabular* and graph. Example *frequency distribution or stem and leaf Abdull Halim Abdul

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