Question 1

There is an entity identification / schema integration issue in this dataset.

True 

False 

Question 2

How many instances  / rows are in this dataset.

Question 3

How many variables / columns are in this dataset.

Question 4

What is the mean of attribute 'age', using 4 digits total (two after the decimal point) ?

Question 5

What is the standard deviation of attribute 'age', using 3 digits total (two after the decimal point) ?

Question 6

What is the minimum of attribute 'age', using 2 digits total ?

Question 7

What is the maximum of attribute 'age', using 2 digits total ?

Question 8

What is the five number summary of attribute 'age' ?

28, 44, 51, 58, 77 

28, 44, 52, 58, 77 

28, 44, 53, 58, 77

Question 9

Check all attributes that are numeric.

age 

sex 

chest_pain 

trestbps 

chol 

fbs 

restecg 

thalach 

exang 

oldpeak 

slope 

ca 

thal 

num 

Question 10

Check all attributes that are categorical.

age 

sex 

chest_pain 

trestbps 

chol 

fbs

restecg 

thalach 

exang 

oldpeak 

slope 

ca 

thal 

num 

Question 11 

What is this graphic and what does it show ? 

Question 12

Does any pair of different variables seem correlated (to vary in the same direction for a positive correlation, or to vary in opposite direction for a negative correlation)?

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