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stratified sampling method in statistics. Research on sample collecting data in scientific survey techniques.

Stratified sampling method in statistics. Research on sample collecting data in scientific survey techniques. Vector

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Size Width Height Mp
s 500 px 313 px 0.5
m 1000 px 625 px 2
l 2000 px 1250 px 8
xl 6400 px 4000 px 15
vect 6400 px 4000 px -

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