Activity 12 - Basic Symbols Identify what does each of the...

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© 2018 Singapore University of Social Sciences. All rights reserved. BUS105 Statistics Seminar 1 Topics Unit 1 1.1 Describing Data: Graphic Presentation 1.2 Describing Data: Numerical Measures 2.1 Basic Probability Concepts 2.2 Discrete Probability Distributions 2.3 Continuous Probability Distributions 3.1 Sampling Methods 3.2 Central Limit Theorem © 2018 Singapore University of Social Sciences. All rights reserved. Review: Describing Data Statistics Descriptive statistics Inferential statistics Variables Qualitative variable Quantitative variable Discrete Continuous Describing data Graphic presentation: bar chart, pie chart, histogram (frequency distribution), scatter plots (relationship between two variables) Numerical measures Location: mean, mode, median, skewness Dispersion: range, variance, standard deviation © 2018 Singapore University of Social Sciences. All rights reserved. Activity 1.1 Basic Concepts 1. A population is a collection of all individuals, objects, or measurements of interest. True False 2. A sample is a portion or part of the population of interest. True False 3. The words descriptive statistics and inferential statistics can be used interchangeably. True False 4. Kaka Ltd has 9,000 workers. 360 staff members were polled regarding a new wage package to be submitted to management. The population is the 360 members. True / False © 2018 Singapore University of Social Sciences. All rights reserved.
Activity 1.1 Debrief 1. A population is a collection of all individuals, objects, or measurements of interest. 2. A sample is a portion or part of the population of interest. 3. The words descriptive statistics and inferential statistics can be used interchangeably. 4. Kaka Ltd has 9,000 workers. 360 staff members were polled regarding a new wage package to be submitted to management. Inferential statistics: estimate a property of a population based on a sample The population is the 360 members. True / False © 2018 Singapore University of Social Sciences. All rights reserved. Activity 1.1 Debrief © 2018 Singapore University of Social Sciences. All rights reserved. Activity 1.2 - Basic Symbols Identify what does each of the following symbols represents: Activity 1.2 Debrief Think about given a sample, how to calculate these sample statistics? X 2 S S 2 N n © 2018 Singapore University of Social Sciences. All rights reserved. Measure Population Parameter Sample Statistic Mean Variance Standard Deviation Size N n X 2 S S 2

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