by 365 Careers | Released October 2018 | ISBN: 9781789803259

Statistics you need in the office: Descriptive and inferential statistics, hypothesis testing, and regression analysisAbout This VideoLearn and understand the fundamentals of statistics for Data Science and Business Analysis.A practical tutorial with case studies for people interested in Data Science and Business Analysis.In DetailThis course will teach you fundamental skills that will enable you to understand complicated statistical analysis directly applicable to real-life situations. Modern software packages and programming languages are now automating most of these activities, but this course gives you something more valuable - critical thinking abilities. This course will help you understand the fundamentals of statistics, learn how to work with different types of data, calculate correlation and covariance, and more. Careers in the field of data science are some of the most popular in the corporate world today. And, given that most businesses are starting to realize the advantages of working with the data at their disposal, this trend will only continue to grow Show and hide more Publisher Resources Download Example Code

1. Chapter 1 : Introduction
   • What does the Course Cover? 00:02:56
2. Chapter 2 : Sample or population data?
   • Understanding the difference between a population and a sample 00:03:57
3. Chapter 3 : The fundamentals of descriptive statistics
   • The various types of data we can work with 00:03:19
   • Levels of measurement 00:02:57
   • Categorical variables. Visualization techniques for categorical variables 00:04:07
   • Numerical variables. Using a frequency distribution table 00:03:24
   • Histogram charts 00:02:28
   • Cross tables and scatter plots 00:05:07
4. Chapter 4 : Measures of central tendency, asymmetry, and variability
   • The main measures of central tendency: mean, median, mode 00:04:24
   • Measuring skewness 00:02:44
   • Measuring how data is spread out: calculating variance 00:05:58
   • Standard deviation and coefficient of variation 00:04:55
   • Calculating and understanding covariance 00:03:31
   • The correlation coefficient 00:03:48
5. Chapter 5 : Practical example: descriptive statistics
   • Practical example 00:14:31
6. Chapter 6 : Distributions
   • Introduction to inferential statistics 00:01:02
   • What is a distribution? 00:03:40
   • The Normal distribution 00:03:46
   • The standard normal distribution 00:02:52
   • Understanding the central limit theorem 00:03:41
   • Standard error 00:01:20
7. Chapter 7 : Estimators and estimates
   • Working with estimators and estimates 00:02:36
   • Confidence intervals - an invaluable tool for decision making 00:06:31
   • Calculating confidence intervals within a population with a known variance 00:02:30
   • Student’s T distribution 00:03:14
   • Calculating confidence intervals within a population with an unknown variance 00:04:07
   • What is a margin of error and why is it important in Statistics? 00:04:38
8. Chapter 8 : Confidence intervals: advanced topics
   • Calculating confidence intervals for two means with dependent samples 00:04:48
   • Calculating confidence intervals for two means with independent samples (part 1) 00:04:36
   • Calculating confidence intervals for two means with independent samples (part 2) 00:03:40
   • Calculating confidence intervals for two means with independent samples (part 3) 00:01:25
9. Chapter 9 : Practical example: inferential statistics
   • Practical example: inferential statistics 00:09:37
10. Chapter 10 : Hypothesis testing: Introduction
    • The null and the alternative hypothesis 00:04:56
    • Establishing a rejection region and a significance level 00:04:20
    • Type I error vs Type II error 00:03:21
11. Chapter 11 : Hypothesis testing: Let's start testing!
    • Test for the mean. Population variance known 00:06:08
    • What is the p-value and why is it one of the most useful tool for statisticians? 00:03:55
    • Test for the mean. Population variance unknown 00:04:26
    • Test for the mean. Dependent samples 00:04:45
    • Test for the mean. Independent samples (Part 1) 00:03:39
    • Test for the mean. Independent samples (Part 2) 00:03:49
12. Chapter 12 : Practical example: hypothesis testing
    • Practical example: hypothesis testing 00:06:31
13. Chapter 13 : The fundamentals of regression analysis
    • Introduction to regression analysis 00:01:02
    • Correlation and causation 00:04:07
    • The linear regression model made easy 00:05:03
    • What is the difference between correlation and regression? 00:01:28
    • A geometrical representation of the linear regression model 00:01:18
    • A practical example - Reinforced learning 00:05:36
14. Chapter 14 : Subtleties of regression analysis
    • Decomposing the linear regression model - understanding its nuts and bolts 00:02:04
    • What is R- squared and how does it help us? 00:05:00
    • The ordinary least squares setting and its practical applications 00:02:08
    • Studying regression tables 00:04:35
    • The multiple linear regression model 00:02:42
    • Adjusted R-squared 00:04:57
    • What does the F-statistic show us and why we need to understand it? 00:02:01
15. Chapter 15 : Assumptions for linear regression analysis
    • OLS assumptions 00:02:12
    • A1. Linearity 00:01:40
    • A2. No endogeneity 00:03:44
    • A3. Normality and homoscedasticity 00:05:10
    • A4. No autocorrelation 00:03:11
    • A5. No multicollinearity 00:03:22
16. Chapter 16 : Dealing with categorical data
    • Dummy variables 00:05:21
17. Chapter 17 : Practical example: regression analysis
    • Practical example: regression analysis 00:14:42
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