Controversies in Science/Are humans causing global warming/A Critique of Corrections to the Mann et. al.(1998) proxy data base and northern hemispheric average temperature series

(Review Paper) Cited in

Hockey Stick Graph is Wrong
The data used to construct the hockey stick graph contains many errors that together create an incorrect graph that artificially shows a steep climb in temperature since the industrial revolution

Results
The calculations done to produce the “hockey stick” graph have two major flaws. The first being that there were inconsistencies in the inclusion and exclusion of data sites. Secondly, outliers in the collected data were left unexplained despite their variance from the mean.