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WorksheetsForFun
Total questions: 10
Worksheet time: 3mins
Why data is so important to business?
More data will generate more revenue
Data help us to make better decision
Data help us to improve business understanding
Business understanding will improve data quality
Which query bellow are true for counting car for each CustomerID ?
SELECT count(CarID) FROM `Services_Data` GROUP BY CustomerID;
SELECT sum(CarID) FROM `Services_Data` GROUP BY CustomerID;
SELECT count(CarID), CustomerID GROUP BY CustomerID FROM `Services_Data`;
SELECT count(CarID), CustomerID FROM`Services_Data` GROUP BY CustomerID;
Library in python used for analysis and manipulating data in tabular form (2 D)
Numpy
Scikit Learn
Scipy
Pandas
To show trend over 200 months, usually we use
Bar Chart
Pie Chart
Line Chart
Scatter Plot
A, B, and C represents: … respectively.
Mode, Median, Mean
Median, Mean, Mode
Mean, Median, Mode
Median, Mode, Mean
What is Supervised Learning?
Learning by supervision from another machine
Inferring a pattern from labelled data
Inferring a pattern from unlabelled data
learning supervision by machine itself
To calculate the performance of classification models we can use
Accuracy, RMSE, and MAPE
Accuracy, Precision, and F1
R-squared, RMSE, and MAPE
Sensitivity, MAPE, and Precision
Which one is considered quantitative research?
Interviews
Survey
Focus Group Discussion
Observation
The following methods can be used to segment customers, except
Random Forest
K-Means
Hierarchial
DBSCAN
What does uncle do for a living?
He's a chef
He runs an animal shelter
He's a doctor
He's a data scientist
