We did a lot of stuff today. Here are some notes about bias: Then we learned about quartiles and percentiles. They're very similar to median, which divides your data set into two equal parts, except they divide your data set into four parts (quartiles) and 100 parts (percentiles). We then started into z-scores. Take … Continue reading MDM4U Bias, quartiles, percentiles, z-scores
We're going to practise working with one-variable data in a spreadsheet. Use one of these links: Google Sheets Microsoft Excel
We finished up our chat about how to ask questions, and talked about different types of data (quantitative vs. qualitative). Then we headed to explorelearning.com to use a few Gizmos about the measures we've been using. I can't post the class code here, so if you missed class today you can ask me when you … Continue reading MDM4U Data Types and Gizmos
Yesterday We learned about measures of spread (sorry I forgot to post this!). The big one is Standard Deviation, which is represented by the greek letter $latex \sigma $ for a population and $latex s $ for a sample. There is a formula, but it's long and not really important here. It's in your textbook. … Continue reading MDM4U Measures of Spread; Sampling
Well, we didn't get as far as I expected today (I probably talked too much!). We discussed Summation/Sigma Notation Weighted Mean Outliers Homework is page 133 #3-5. Tomorrow we definitely get to measures of spread. See you then!
Well, it's the second day of class and I'm behind on the class blog. Sorry, folks. Been a busy week for some reason :) Today we talked about mean, median, and mode, the three usual measures of central tendency. We sometimes call them the "averages" for a data set. We used the Chromebooks to learn … Continue reading MDM4U Measures of Central Tendency