Univariate analysis for Ozone

Prepared by Jonathan Godfrey

Basic summary measures

Counts

153 values in all, made up of 68 unique values, 116 observed, and 37 missing values.

Measures of location

Quantiles

Measures of spread

Basic univariate graphs

Histogram

This is a histogram, with the title: Histogram of Ozone
"Ozone" is marked on the x-axis.
Tick marks for the x-axis are at: 0, 50, 100, and 150 
There are a total of 116 elements for this variable.
Tick marks for the y-axis are at: 0, 10, 20, and 30 
It has 9 bins with equal widths, starting at 0 and ending at 180 .
The mids and counts for the bins are:
mid = 10  count = 37 
mid = 30  count = 34 
mid = 50  count = 14 
mid = 70  count = 15 
mid = 90  count = 9 
mid = 110  count = 4 
mid = 130  count = 2 
mid = 150  count = 0 
mid = 170  count = 1

Boxplot

This graph has a boxplot printed horizontally
with the title: 
"" appears on the x-axis.
"" appears on the y-axis.
Tick marks for the x-axis are at: 0, 50, 100, and 150 
This variable  has 116 values.
An outlier is marked at: 135 168 
The whiskers extend to 1 and 122 from the ends of the box, 
which are at 18 and 63.5 
The median, 31.5 is 30 % from the left end of the box to the right end.
The right whisker is 3.44 times the length of the left whisker.

Assessing normality

Formal tests for normality

Normality plot

Formal tests of moments