scored1.csv

id,foo_a: foo,foo_b: foo,foo_c: foo,foo_d: foo,bar_a: bar,bar_b: bar,bar_c: bar,bar_d: bar,foo_mean,foo_meanImputedFraction,bar_sum,bar_sumImputedFraction
1,6,4,4,skipped,4,skipped,3,5,4.67,0.25,16,0.25
2,1,4,5,3,5,1,6,1,3.25,0,13,0
3,,,,,,,4,,NaN,1,16,0.75