Question

已知一組數(shù)據(jù)的頻率為0.25，數(shù)據(jù)總個(gè)數(shù)為100個(gè)，則這組數(shù)據(jù)的頻數(shù)為

25

．

Answer 1

分析：根據(jù)頻率=頻數(shù)÷總數(shù)可得頻數(shù)=總數(shù)×頻率，代入相應(yīng)數(shù)值可得答案．

解答：解：這組數(shù)據(jù)的頻數(shù)為：100×0.25=25．
故答案為：25．

點(diǎn)評：此題主要考查了頻數(shù)與頻率，關(guān)鍵是掌握頻率=頻數(shù)÷總數(shù)．