# Week 1: Monday (November 16th 2020)

#### Afternoon:
1. What is data?
2. Kind of data:
- Qualitative: descriptive information, used to describe events, or objects in the events (images, text)
- Quantitative:
- Discrete
- Continuous

- Example:
- Qualitative data:
- the girl is crunching the pencil
- The color of the hair
- the color of the shirt
- the computer type

- Quantitative:
- number of pencils
- number of color of the pencil
- number of eyes
- the length of the hair
- Discussion:
- Why do we need data?
- Data is the new oil
- Data is used to understand the insight of some thing (process, customers, economy etc...)
- How can we collect data?
- sensors (in machine, production process)
- surveys/ interviews (behaviors, customers tastes)
- camera
- recorder
- Census vs Sample
- Census: the entire population, costly to collect, not real time
- Sample: collect a subset of the population, but needs to randomly take the sample to make sure the sample representative of the population, avoid bias when sampling
- Structured data vs Unstructured data:
- Structured data: well formatted, have proper columns and rows, have clear definition of data types
- Unstructured data: voice or audio data, text data from newspapers
- Data Science: extract insights from data
- Machine Learning: program computers to solve some tasks without explicit setting out the rules by programmers
- ML classification: regression, classification
- How does ML work?
- Traditional SW workflow: programmers define the rule, evaluate the software performance, then adjust or update the rule
- ML: let the computer learn to solve the problem by giving it enough data

# Week 1: Tuesday (November 17th 2020)

#### Morning:
- Python basics

#### After:
- Python basics (cont)

# Week 1: Wednesday (November 18th 2020)
#### Morning:
- Python basics

#### After:
- Python basics (cont)

# Week 1: Thursday (November 19th 2020)
#### Morning:
- CLI/ Bash

# Week 1: Friday (November 20th 2020)
#### Morning:
- HTML
- Tag syntax:
<h1>
This is an example of tag h1
</h1>
- <tagname attributename="attributevalue">content</tagname>
- <p class="foo">This is a paragraph in a p tag class foo</p>
- tag p takes the entire span
- tag span takes only the width equal to the content

- CSS (Cascading Stylesheets)
- CSS code inside an HTML tag
- CSS code inside an HTML document
- CSS code in external file style.css (preferred)

- Semantic tags for HTML:
- header, nav, main, article, footer

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