AACS1573 Q2

How do you interpret data?

• Revealing patterns and Measuring data

• delete some data entries

• collect raw data from various resource

• Measuring patterns

Identify the outlier

{12,10,14,21,19,20,15,55,13,22,11,}

• 11

• 22

• 55

• 10

What does the outlier affect?

• It increases the mean

• it increases the range

• It increases the median

• all

What's the purpose of text preprocessing/ indexing?

• to collect data

• to create a diagram more easily

• To optimize speed, performance in finding relevant documents

• To slow down performance of info retrieval

A chart is a ______ representation of data

• candylicious

• graphalicious

• graphical

• geolicious

Which representation clearly shows the middle lower 25% of the data?

• Bar Chart

• Box-plot

• Pie Chart

• Scatter Plot

Which visualization tools are helpful in detecting outlier(s)?

• Histogram and bar chart

• Bar chart and pie chart

• Box-plot and pie chart

• Box-plot and scatter plot

Consider there are 2 variables in our apartment dataset: (i) the number of rooms and (ii) the surface area.

Which preprocessing is performed to change Figure A to B?

• Data cleansing

• Data storing

• Data normalization

• Data imputation

_____ is a technique for machine learning

• Data integration

• Supervised learning

• Data imputation

• Information testing

What is the difference between supervised and unsupervised Learning in machine learning?

• Unsupervised learning requires training labelled data

• Unsupervised learning has no function in machine learning

• Supervised learning requires training labelled data

• Supervised learning does not requires training labelled data