2.1 随机抽样（学案二）-2020年高中同步教与学数学(人教B版必修3)

书书书 !"# ! $ ! % !!" ! !"#$ !!"!" ! %&!"#$ ! " '( " !! !"#"$% !! )*+, ! %&!"#$-./ ! " " !"# # $%&'() ! *+,-./0#1234) " *56 # 789!:12;+,-*<'',=>?*@AB C1D # EF15GHIJKLMN15 # ! # " O+,-*',PQ; # RSKLMN15 # T*UV 7W $ ! TXYC1256*+,-*',(=Z # E5 # [\ ]^MN12*56_+,`abc % " Td$+,-e'# `a12 # E5 # [\f15gh-`aij % # Td!F./ 015 # k\15gh-lmS./015 # nop=Pqr* gSB # stk\u12*56-v=Cwx12*', # [\ `a=y*bcz{| % $ Td!FN}~�*15 # .�9: $+,-12!'',; # <'',C12*N}>� # stf �'15^�- # <'',C12*N}�>� # $s���E F15GH*��B # 6��V���� $ ! KLMN15��-*=y�� $ ' , & 56 & 5634���� # " KLMN15*UV��f{|;��� # !! )*+0 ! #12 ! " " 1�H�d�+,-* ! '',�� # ����f�� � # ���/f!'3 - # ¡¢~£¤ # 9:$-12!'� � # ¥¦12 " ! " " ! " : # §W���*�� # �¨D!'34 ) " *56 # ! # " 1�HKL�a # O+,-*',(.l; # n+,� \ ' ¡¢~£ ( *©ª«P3� # E;9'',=~�*N}C 1- # $sA¬��56*­®B # ¯d # O+,-*',(P l; # �+, ' ¡¢~£ ( �«P°± # }²³15*.�� # ! $ " !"# # S1�H$34) ! *+,-12!'34) " *56*´µ) $ ! �+,-*u=',�� ! ��@¶$ " D ! "% " � " % ! E ! '���f·© & ¸¹>?*��� ! � �@¶S¹º & »¼ & ½¾�¿j "% # ���/f!'.ÀÁ* 3 - # ¡¢~£ % $ $3 -9:12!'�� # §Ão� � # ¥¦12 " : % & $+,-�Ä1D*�*��>!³*' ,2� # )*+3 ! !"452 ! " " S1�H1256; # ��*^�=;@¶ÅÆ ! 7S Ç=�� "# ¯¿�*^��±¶ÅÈ� # st # ¿��«PÉ Ê # KË¿�^�*!'=ÌÍH�d¿j!'® # o-*9' (ÎdSMNGHÏÐ* # E5*®Ñ)MN(® # \d # ÒÓ ÔÕÖ!�*×ØDMN(®-Ù2���@¶ # EF15G HIMN(®H # ! # " SMN(®H1256*´µd $ ! �+,-*u=* ',�� ! 9'��Ú(!³ "% " fMN(®-ÛÙ!'(j )ÜÝ % # $Ù�*(ÜÝÖ!�*GÞßWÈ # ¨D*��à .f��- # Øá^ # àf��- # Ø2� % 78¨D*��âã Çä2� # �á^È # 7åæ¦WÈ # çD2è)é % $ êëÙ� *��1256 # ! $ " fSMN(®H15;}ìD¶Wíî $ XYSî-u ï*��1256 # ¯uï��Ú(.!³ # E; # @¶S¶W GH`að� $ ! fÚ(Q*(âñò ' % (# óôÚ( # 7 " # # # )# "%% @ð�) %%" # %%# #)# "%%# " �õö*��ò� "% *÷ ( # 7 " # # #)# "%% # 9'(ò "% *÷(@ð�) "%" # "%# #)# #%%# # �',wø�� # Öø��12ù¶¤ # ú_ûü�õö *�� # !! &'()*+ !! 67 " ! %&!"#$-./ # 8 " $ ! Wýíî- # þÿ!SKLMN15GH15*d ! " &# "#$%= $# &'Ú # 9&= '% ''Ú # 'Ú�d " % '%# =!:()}*è�+, # ()}-.¶¤)+2/ 0 # X1W $# 2+,`a'3 (# $ "% 456-1� $ 4`a7489 )# ":;=f�<= "*% < # o-a><= "* < # ?@ ""# < # ¤A<= $# < # ?BCD)�E:;NFGH/0 # X$-12!'34) #% *56 +# "IJK=L# ,%