Number of kids prediction - Preprocessing Data Machine Learning

This is the collected data

Number of Kids	Working Expereince (years)	Age	Salary	Blood Types
3	15	45	$250,000	A
1	5	30	$200,000	B
2	10	38	$150,000	AB
1		36	$180,000	O

ProcessPlease clean the missing data using median approach ==>

What is the value of the ?

Please use Correlation to determine which of the following attributes is more related to "Number of Kids"?

Working Expereince

Age

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What is the correlation of "Number of Kids" and "Working Expereince"?

What is the correlation of "Number of Kids" and "Age"?

Based on the correlations, which of the following attributes is more related to "Number of Kids"?

Working Expereince

Age