1 / 15

MA-250 Probability and Statistics

MA-250 Probability and Statistics. Nazar Khan PUCIT Lecture 2. Descriptive Statistics. Large amounts of data needs to be summarized Histogram Mean and Standard Deviation The Normal Curve. Histogram. To represent distribution of data

anja
Download Presentation

MA-250 Probability and Statistics

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MA-250 Probability and Statistics Nazar Khan PUCIT Lecture 2

  2. Descriptive Statistics • Large amounts of data needs to be summarized • Histogram • Mean and Standard Deviation • The Normal Curve

  3. Histogram • To represent distribution of data • Area of a block represents percentage of data lying within that block • What should be the total area under a histogram?

  4. Drawing a histogram • Horizontal scale • Vertical scale • End-point notation

  5. Variable • A characteristic that changes from sample to sample in the study • Age, Income, Smoker, Marital Status, Political affiliation, etc • Qualitative • Marital status, Political affiliation • Quantitative • Discrete • Age • Continuous • Income

  6. Controlling for a variable

  7. Cross-tabulation • To handle confounding factors

  8. Selective Breeding

More Related