Nate Silver, what have you wrought?

Let’s see what replacing a zero with a blank does.

1. Create a dataset

x	y
1	1
2	2
3	3
	0
5	5

Note: When you read the data in R, blanks will be replaced by NA.

2. Get summary statistics

Variable	min	median	mean	max	sd	var	n
x	1	2.5	2.75	5	1.71	2.92	5
y	0	2.0	2.20	5	1.92	3.70	5

3. Plot histograms