# Unit 3 Core: Data Analysis Notes

 Unit/Area of Study Topics Notes Online Resources Unit.3 Headstart Summary Tasks Worksheet Univariate Data Task Bivariate Data Task 1. Core – Data Analysis Univariate Data Types of data Notes 3.1.1 Juddy Productions: Data Classification video Representing distributions Notes 3.1.2 Juddy Productions: Median video Excel: Frequency Table and Segmented bar charts Log base 10 Histograms Notes 3.1.3 Logarithm video Describing Distributions Notes 3.1.4 Identifying outliers Skewness video The 68%-95%-99.7% & z scores Notes 3.1.6 Juddy Productions: Normal distribution video Worksheet: Normal distribution Template: Normal Distribution Further Maths: The 68-95-99.7% Rule Part 1 video Further Maths: The 68-95-99.7% Rule Part 2 video Juddy Productions: Z Score video Worksheet: Z Score Further Maths: Z Scores video Mean & Standard Deviation Notes 3.1.7 Bivariate Data Back to back stem and leaf plots Notes 3.1.8 Back 2 back stem and leaf Parallel box plots 1 Box plots & comparisons Notes 3.1.9 Parallel box plots 2 Response & explanatory variables Notes 3.1.10 Explanatory  & response variables Two-way frequency Tables & segmented bar charts Notes 3.1.11 Juddy Productions: Representation of Bivariate Data video Two-way frequency tables Scatter plots Notes 3.1.12 Interpreting scatterplots Scatterplot analysis Pearson’s product-moment correlation coefficient (r) Notes 3.1.13 Pearson’s product-moment correlation coefficient (r) Coefficient of determination (r2) Notes 3.1.14 Coefficient of determination Interpreting least squares regression equations Notes 3.1.15 TI-Nspire Tute Interpreting straight line graphs Online simulation Linear regression examples Linear Regression Sample  Task 1 Linear Regression Sample Task 1 Solutions Video Solution – Example 1 Linear Regression Sample Task 2 Linear Regression Sample Task 2 Solutions Video Solution – Example 2 Transformations to linearity Notes 3.1.16 Residual analysis example Transforming data sets Examples of transformations Time Series Smoothing Notes Smoothing video Smoothing  Worksheet 1 Smoothing Worksheet 2 3 Point Moving Avg Video 5 Point Moving Avg Video 4 Point Moving Avg – Centred Video 3 Point Median Video 5 Point Median Video Deseasonalising Data Video S.I. Exam Qn 1 S.I. Exam Qn 2