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Worksheets20IT211 Data Science
Total questions: 10
Worksheet time: 12mins
Select the main purpose of data exploration. U/CO2
To build machine learning models
To identify patterns and insights in data
To perform system testing
To store data efficiently
Choose the best representation of a measure of central tendency in a dataset. U/CO2
Variance
Standard Deviation
Mean
Range
A_____ is an enhanced form of a simple scatterplot where more than two dimensions can be included in the chart and studied simultaneoulsy R/CO2
scatter multiple
Histogram
Bar chart
Scatter plot
What does a box plot NOT show? R/CO2
Mean
Median
Outliers
Interquartile range
Identify the limitation of visualizing more than three attributes on a two-dimensional medium. U/CO2
Increased clarity
Reduced need for dimensionality reduction
Difficulty in capturing complex patterns
Better layout control
A positively skewed distribution has___ . R/CO2
Mean > Median > Mode
Mean < Median < Mode
Mean = Median = Mode
Mean = Mode > Median
Calculate the Interquartile Range (IQR) for the dataset: [6, 7, 8, 9, 10, 11, 12, 13, 14] R/CO2
5
4
6
3
Select the option that indicates a distribution with heavy tails and a sharp peak. U/CO2
Mesokurtic
Platykurtic
Leptokurtic
Normal
In the dataset [2, 4, 6, 8, 10, 12, 14, 16], what is Q2 (median)? R/CO2
8
10
12
9
Choose the correct option that indicates the meaning of bubble size in a bubble chart. U/CO2
X-Axis
Time
A third variable’s value
Axis title
