Question

已知一組數(shù)據(jù)的頻率為0.35，數(shù)據(jù)總數(shù)為500個(gè)，則這組數(shù)據(jù)的頻數(shù)為

175

．

Answer 1

分析：根據(jù)頻率、頻數(shù)的關(guān)系：頻率=頻數(shù)÷數(shù)據(jù)總數(shù)可得這組數(shù)據(jù)的頻數(shù)．

解答：解：∵一組數(shù)據(jù)的頻率是0.35，數(shù)據(jù)總數(shù)為500個(gè)，
∴這組數(shù)據(jù)的頻數(shù)為500×0.35=175．
故答案為：175．

點(diǎn)評：本題考查頻率、頻數(shù)、數(shù)據(jù)總數(shù)的關(guān)系：頻率=頻數(shù)÷數(shù)據(jù)總數(shù)．