Math Unit 2: Relations

Math Unit 2: Relations

1. Hypothesis + Opposite

2. Primary Data vs. Secondary Data

   • Primary Data means you collected the Data yourself via sampling
   • Secondary Data Means that you used data that somebody else has gathered

3. Sampling

   • Population / Census
   • Sample (Part of a population)
     • Simple Random Sampling e.g. picking names from a hat
     • Systematic Sampling e.g. Every 5th person of a list
     • Stratified Sampling e.g. 10% of every grade at school
     • Non-random Sampling e.g. asking people around a pool if they swim

4. Drawing a Scatterplot

   • Labelling Axis
     • With units
   • Scale
   • Data
   • Title

5. Analysis

   • Type
     • Negative
     • Positive
   • Strength
     • Weak
     • Moderate
     • Strong
   • Line / Curve of Best Fit
     • Mean Fit Line
   • Finite Difference
   • Interpolation vs. Extrapolation
     • Interpolation means predicting something within your data range
     • Extrapolation means predicting something outside of your data range