Chapter 3: Analysis

Question 1

Data

Answer 1

describes raw data in formats such as CSV

Question 2

What does CSV stand for?

Answer 2

Comma separated value

Question 3

Accessing Data

Answer 3

getting from data format

Question 4

Pre-processing data

Answer 4

stage where we apply techniques to ensure that data is of good quality

Question 5

Issues of data quality

Answer 5

Missing data
Out of range data
Non-validated data
Incorrect data structure

Question 6

Reasons why data quality issues arise:

Answer 6

Poor validation in code
Typos
Manual entry of data from paper

Question 7

Analysis

Answer 7

checking factors such as max and min value from a dataset

Question 8

Visualization

Answer 8

It helps understand data through elements like graphs

Question 9

Accessing pre-processed data

Answer 9

transferring data from micro bit to PC

Question 10

What does serial communication ?

Answer 10

Sends ASCII values byte by byte using 2 wires

Question 11

Serial Port Emulation

Answer 11

Getting the USB connection to emulate the serial communication

Question 12

Layers of the PC

Answer 12

1. USB cable communication with emulated serial port
2. Operating System(OS)-windows
3. Python programs (pyserial)

Question 13

COM PORT

Answer 13

The operating system uses COM PORT numbers to identify devices that are connected to the PC