Description for chart 1
Blood lead concentrations (geometric mean), by age group and sex, household population aged 3 to 79 years, Canada, 2009 to 2011

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The title of the graph is "Chart 1 Blood lead concentrations (geometric mean), by age group and sex, household population aged 3 to 79 years, Canada, 2009 to 2011."
This is a column clustered chart.
There are in total 7 categories in the horizontal axis. The vertical axis starts at 0 and ends at 2.5 with ticks every 0.5 points.
There are 3 series in this graph.
The vertical axis is "Blood lead concentration (geometric mean) (µg/dL)."
The horizontal axis is "Age group."
The title of series 1 is "Total."
The minimum value is 0.71 and it corresponds to "12 to 19."
The maximum value is 1.9 and it corresponds to "60 to 79."
The title of series 2 is "Males."
The minimum value is 0.79 and it corresponds to "6 to 11."
The maximum value is 2.0 and it corresponds to "60 to 79."
The title of series 3 is "Females."
The minimum value is 0.60 and it corresponds to "12 to 19."
The maximum value is 1.7 and it corresponds to "60 to 79."

Data table for chart 1

	Total	Males	Females
3 to 79	1.2	1.3	1.1
3 to 5	0.93
6 to 11	0.79	0.79	0.78
12 to 19	0.71	0.84	0.60
20 to 39	0.98	1.1	0.85
40 to 59	1.4	1.6	1.3
60 to 79	1.9	2.0	1.7
Note(s): A geometric mean is a type of average that is less influenced by extreme values than the traditional arithmetic mean. The geometric mean provides a better estimate of central tendency for highly skewed data. This type of data is common in the measurement of environmental chemicals in blood and urine. The sample size for 3 to 5 year olds produces reliable national estimates for both sexes combined only. Source(s): Canadian Health Measures Survey, 2009 to 2011.