Boxplot statistics
Variable	lower whisker	lower hinge	median	upper hinge	upper whisker
LFM	31	91	113.5	148	224
Calculation	0.44	0.67	0.89	0.89	1
Algebraic_Reasoning	0	0.3	0.4	0.6	1
Graphical_Interpretation	0.33	0.67	0.83	1	1
Proportionality_and_Ratio	0	0	0.67	0.67	1
Probability_and_Sampling	0	0	0.5	0.5	1
Estimation	0	0.5	1	1	1
year	2011	2011	2012	2012	2012
group	0	0	1	1	1
gender	0	0	1	1	1

Boxplot Notches
Variable	lower bound	median	upper bound
LFM	108.098560144	113.5	118.901439856
Calculation	0.869152337397895	0.89	0.910847662602105
Algebraic_Reasoning	0.371571369178947	0.4	0.428428630821053
Graphical_Interpretation	0.798728506096842	0.83	0.861271493903158
Proportionality_and_Ratio	0.606509391166316	0.67	0.733490608833685
Probability_and_Sampling	0.452618948631579	0.5	0.547381051368421
Estimation	0.952618948631579	1	1.04738105136842
year	2011.90523789726	2012	2012.09476210274
group	0.905237897263157	1	1.09476210273684
gender	0.905237897263157	1	1.09476210273684