L2

Question 1

what is webscraping

Answer 1

the extraction of data from websites

Question 2

Level of measurements:

Answer 2

1. Nominal - data can be categorised but not ordered. The relevant statistic is frequency
2. Ordinal - data can be categorised and ranked but the differences between data cannot be measured. Relevant statistic is frequency
3. Interval - data can be categorized, ranked, and have equal intervals between data points. relevant statistic is mean
4. Ratio - data can be categorized, ranked, have equal intervals, and true zero points. a true zero means there is an absence of the variable of interest

Question 3

what is variablility

Answer 3

on average, how far is each point/value from the mean

Question 4

what are the 3 frequencies

Answer 4

1. raw frequency - the total occurences of events
2. relative frequency - occurences of the event / total events
3. mode - the event that occurs the most

Question 5

study about box plot

Question 6

study doc for codes