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COMM 205 REVIEW SESSION BY OLGA ALKINA ANSWER KEY
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! ANSWER!KEY!

May 08, 2023

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Khang Minh
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!!COMM!205!REVIEW!SESSION!BY!OLGA!ALKINA!

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ANSWER!KEY! !

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SECTION!8!–!PROBLEMS!

1st#Problem#You!and!your!friends!decided!to!go!to!Europe!after!you!finish!your!finals.!However,!your!demanding!parents!set!a!couple!of!conditions!you!must!meet!to!join!your!friends!(see!table!below).!

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a)!Choose!all!formulas!you!can!use!for!D2!to!answer!the!question:!will!you!be!able!to!join!your!friends!with!the!results!given?!All!conditions!must!be!met!!

" =IF(C2>=B2,IF(C3>=B3,IF(C4>B4,"Yes","No"),"No"),"No")!–!incorrect!(logical!operator)!

# =IF(AND(C2>=B2,C3>=B3,C4>=B4),#"Yes",#"No")#–#correct#

" =IF(C2:C4>=B2:B4,!"Yes",!"No")!–!incorrect!(range)!" =IF(OR(C2>=B2,C3>=B3,C4>=B4),!"Yes",!"No")!–!incorrect!(OR)!" None!of!the!above!

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b)!Imagine!your!parents!would!care!only!about!exams!(only!Midterm!score!and!Final!exam!score!conditions!are!relevant!for!this!question).!Choose!one!option!to!answer!the!same!question:!

o =IF(AND(C3,C4)>=70,!"Yes",!"No")!–!incorrect!(logical!operator!should!be!inside)!o =IF(AND(C3>=B3,C4>=B4),!Yes,!No)!–!incorrect!(missing!quotation!marks)!o Both!formulas!can!be!used!]!incorrect!# Neither#formula#can#be#used#K#correct#

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c)!Imagine!you’re!doing!really!well!in!your!other!courses!so!your!parents!decided!to!be!more!permissive!and!ask!you!to!either!meet!the!Final!exam!score!condition!or!both!of!the!two!remaining!(homework!and!midterm).!

Fill!in!the!gaps!below!to!answer!the!same!question.!

=IF(C4>=B4,"Yes",IF(AND(C2>=B2,C3>=B3),"Yes","No"))!

Challenge!!Write!two!more!formulas!that!would!also!answer!the!question*:!

=IF(AND(C2>=B2,C3>=B3),"Yes",IF(C4>=B4,#"Yes",#"No"))#

=IF(OR(AND(C2>=B2,C3>=B3),C4>=B4),"Yes","No")#

*!This!is!one!of!those!problems!when!you!may!end!up!with!an!answer!that!is!different!from!mine.!Please!ask!me!about!it!at#the#end!of!the!review!session!or!by!email!AFTER!the!session!! !

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2nd#Problem#

!Write!two!formulas!that!would!join!these!words!into!one!phrase*:!

=CONCATENATE(A1,"#",B1,"#",C1,"#",D1,"#")#

=A1&"#"&B1&"#"&C1&"#"&D1#

*!This!is!one!of!those!problems!when!you!may!end!up!with!an!answer!that!is!different!from!mine.!Please!ask!me!about!it!at#the#end!of!the!review!session!or!by!email!AFTER!the!session!!

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3rd#Problem#You!were!asked!to!create!formula!that!would!automatically!indicate!a!price!for!customers!based!on!their!age.!The!list!of!customers!is!much!longer!than!the!one!you!see!in!the!first!table!(it’s!just!an!extract).!

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Choose!all!correct!formulas!for!C2!that!(a)!you!could!drag!down!to!fill!in!C3:C100!and!(b)!would!indicate!price!for!each!customer.!

# =VLOOKUP(B2,$F$2:$G$6,2,TRUE)#" =VLOOKUP(B2,F2:G6,2,TRUE)!–!incorrect!(impossible!to!!drag)!

" =VLOOKUP(B2,$E$2:$G$6,3,TRUE)!–!incorrect!(lookup_value!is!not!in!the!1st!column)!

# =VLOOKUP(B2,F$2:G$6,2,TRUE)!" None!of!the!above!]!incorrect!

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4th#Problem!

You!were!given!a!list!of!100!customers.!Column!‘A’!represents!their!names;!‘B’!is!for!customer!category;!‘C’!is!for!payment!category;!‘D’!indicates!price!that!customers!pay.!An!example!was!given!to!you.!The!example!is!not!the!actual!list!and!simply!shows!different!categories.!

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Payment!categories:!

0!–!discounted!price!

1!–!full!price!

Each!person!belongs!to!at!least!one!customer!and!payment!category.!In!each!category!(both!customer!and!payment),!there!is!at!least!one!person.!!There!are!only!3!price!categories!($0,!$2,!$5).!No!other!categories!exist.!

a)!Answer!the!following!questions:!

What!is!the!minimal!value!of!COUNTIFS!with!one!criterion!(customer!category)?!Two!criteria!(customer!and!payment!categories)?!What!are!the!maximum!values!for!one!and!two!criteria?!

Same!questions!for!SUMIFS:!what!is!the!minimal!possible!value!of!SUMIFS!with!one!criterion!(customer!category)?!Two!criteria!(customer!and!payment!categories)?!What!are!the!maximum!possible!values!for!one!and!two!criteria?!

REMEMBER!!The!above!table!is!not!an!extract!from!the!actual!list.!It’s!just!a!hypothetical!example!of!what!the!list!could!look!like.!

Min#COUNTIFS_1#(one#criterion)#–#1.#Min#COUNTIFS_2#(two#criteria)#–#1*.!(*You/could/argue/that/if/two/conditions/are/‘Child’/and/Payment/category=1,/then/it’s/0./However,/for/child,/it/is/possible/to/have/only/0./There/are/only/3/possible/combos:/Child/and/0,/Adult/and/1,/Adult/and/0./If/your/answer/is/0,/don’t/get/discouraged/b/c/it’s/my/bad./I/didn’t/make/the/

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conditions/clear/enough).!

Max#COUNTIFS_1#–#100.#Max#COUNTIFS_2#–#100.#

Min#SUMIFS_1#–#0.#Min#SUMIFS_2#–#0.#

Max#SUMIFS_1#–#500.#Max#SUMIFS_2#–#500.!

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b)!Which!of!the!following!formulas!could!you!use!if!you!wanted!to:!

• count!all!customers!who!are!adults!and!get!discounted!price?!=COUNTIF(B2:B101,!"=Adult",!C2:C101,!"=0")!–!incorrect!(one!condition!possible)!=COUNTIF(B2:B101,=Adult,!C2:C101,!=0)!–!incorrect!(one!condition!possible!+!missing!quotation!marks)!

# =COUNTIFS(B2:B101,#"=Adult",#C2:C101,#"=0")#• count!all!customers!who!get!discounted!price?!

# =COUNTIFS(C2:C101,#"0")## =COUNTIF(C2:C101,#"=0")#

• count!all!customers!who!are!adults?!# =COUNTIFS(B2:B101,"Adult")## =COUNTIFS(B2:B101,"=Adult")#

c)!Write!a!formula!that!would!indicate!the!total!amount!paid!by!customers!who!are!adults!but!don’t!get!discounted!price.!

=SUMIFS(D2:D101,#B2:B101,#"=Adult",#C2:C101,#"=1")#

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5th#Problem#

!Here,!you!can!see!a!list!of!customers!who!made!a!purchase!at!a!tech!store!in!the!past!3!months.!Now,!the!management!team!wants!to!know!if!they!reached!the!revenue!breakpoint!(earned!a!certain!amount!of!money).!The!revenue!breakpoint!is!$1,500!paid!by!all!loyal!customers!who!made!4!or!more!purchases.!

Your!task!is!to!create!a!formula!for!E2!that!would!answer!the!question:!did!the!company!reach!the!breakpoint?!If!the!target!is!met,!indicate!‘TargetMet’.!If!not,!indicate!‘TargetNotMet’.!

=IF(SUMIFS(D2:D9,B2:B9,"Loyal",C2:C9,">=4")>=1500,"TargetMet",#"TargetNotMet")# #

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6th#Problem#

!Choose!all!correct!formulas!that!would!transform!A1!text!into!A3!text.!

" =SUBSTITUTE(A1,"great","Great")!–!incorrect!(period!is!left)!" =SUBSTITUTE(A1,"great","Great",1)!–!incorrect!(period!is!left)!" =REPLACE(A1,32,5,"Great")!–!incorrect!(period!is!left)!

" =REPLACE(A1,32,5,"=Great")!–!incorrect!(period!is!left!+!‘=’!sign!should!not!be!there)!

" =Substitute(A23,!'great',!'Great')!–!incorrect!(‘_’!instead!of!“_”)!# None#of#the#above#

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7th#Problem#You!were!given!a!list!of!BC!addresses.!However,!the!list!is!not!edited!properly,!and!the!addresses!contain!a!lot!of!redundant!spaces.!

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(1)!Create!formula!in!B2!that,!if!dragged!down,!removes!redundant!spaces:!

=TRIM(A2)#

(2)!Fill!in!blanks!in!the!formula!in!C2!that,!if!dragged!down,!converts!province!abbreviations!into!full!names!

=IF(LEFT(RIGHT(B2,4),1)=",",REPLACE(B2,LEN(B2)K1,2,"British!Columbia"),B2)!

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8th#Problem#

!Your!task!here!is!to!extract!option!name!(e.g.!Accounting)!from!cells!C2:C7!into!B2:B7.!However,!you!need!to!create!two!formulas:!the!first!one!should!contain!SEARCH!with!wildcard!operators;!the!second!one!should!contain!FIND.!

Once!you!create!two!formulas!for!B2!cell,!you!should!be!able!to!drag!them!all!the!way!down!to!B7.!

=MID(A2,SEARCH(",*,",A2)+2,#LEN(A2)K16)#

=MID(A2,FIND(",",A2)+2,#LEN(A2)K16)#

*!This!is!one!of!those!problems!when!you!may!end!up!with!an!answer!that!is!different!from!mine.!Please!ask!me!about!it!at#the#end!of!the!review!session!or!by!email!AFTER!the!session!!

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9th#Problem#Here’s!a!real!challenge!for!you!!(But!there’s!nothing!you!can’t!cope!with!right?)!Hint:!you!will!probably!have!to!use!3]4!different!formulas,!but!you!may!use!some!of!them!more!than!once!(depends!on!how!you!will!tackle!this!problem).!

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In!this!problem,!you!need!to!replace!province!abbreviations!as!you!see!them!in!A2:A9!with!full!province!names!(ON!]>!Ontario)!while!keeping!the!rest!of!an!address.!Thus,!what!you!should!get!in!B2!is!‘6554!Blue!Zephyr!Road,!Hooker,!Ontario’!

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Create!at!least!one!formula,!but!feel!free!to!challenge!yourself!and!come!up!with!even!more.!

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=REPLACE(A2,LEN(A2)K1,2,VLOOKUP(RIGHT(A2,2),$D$2:$E$11,2,FALSE))#

=REPLACE(A2,FIND(RIGHT(A2,2),A2),2,VLOOKUP(RIGHT(A2,2),$D$2:$E$11,2,FALSE))#

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