在组距分组汇中，一个组的最小值称为下限，最大值称为上限。上限值和下限值的平均数称为（）。

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组距分组时下列说法正确的是

一个组距的最小值称为上限，最大值称为下限一个组的最小值称为下限，最大值称为上限上限与下限的差值称为组距上限与下限值的平均数称为组中值一个组距的最小值称为下限，最大值称为上限

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Inthediningroomofmygrandfather’shousestoodamassivegrandfatherclock.Mealsinthatdiningroomwerea____1____forfourgenerationstobecomeone.Thetablewasalways____2____withfoodfromwonderfulfamilyrecipes食谱allcontaining____3____asthemainingredient成分.Andalwaysthatgrandfatherclockstoodlikeatrustedoldfamily____4____sharingourhappiness.AsIwasachildtheoldclock____5____me.Iwatchedandlistenedtoitduringmeals.I____6____howatdifferenttimesofthedaythatclockwouldstrikewithawonderful____7____.Yearafteryeartheclockstruckapartofmy____8____apartofmyheart.Evenmorewonderfultomewaswhatmygrandfatherdideachday.He____9____woundthatclockwithaspecialandmagickeywhich____10____theclocktickingandstriking.Heneverletthatclockwinddownand____11____.Whenwegrandkidsgotalittleolderheshowedushowto____12____theclock.SeveraldaysaftermygrandfatherdiedIenteredthediningroomwithtearsflowing____13____.Theclockstooddeservedly____14____seemingsmallerandnotasmagnificentasbefore.Icouldn’t____15____tolookatit.Yearslatermygrandmothergavemetheclockandthekey.Theoldhousewasquiet.Iopenedtheclockdoorwithmyshakinghand.Then____16____reverently虔诚地Ienteredthekeyandwoundtheclock.Itsprangto____17____Tick-tocktick-tocklifeandchimeswere____18____intothediningroomintohouseandintomy____19____.Inthemovementofthehandsoftheclockmygrandfather____20____again. 4空处应填
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Inthediningroomofmygrandfather’shousestoodamassivegrandfatherclock.Mealsinthatdiningroomwerea____1____forfourgenerationstobecomeone.Thetablewasalways____2____withfoodfromwonderfulfamilyrecipes食谱allcontaining____3____asthemainingredient成分.Andalwaysthatgrandfatherclockstoodlikeatrustedoldfamily____4____sharingourhappiness.AsIwasachildtheoldclock____5____me.Iwatchedandlistenedtoitduringmeals.I____6____howatdifferenttimesofthedaythatclockwouldstrikewithawonderful____7____.Yearafteryeartheclockstruckapartofmy____8____apartofmyheart.Evenmorewonderfultomewaswhatmygrandfatherdideachday.He____9____woundthatclockwithaspecialandmagickeywhich____10____theclocktickingandstriking.Heneverletthatclockwinddownand____11____.Whenwegrandkidsgotalittleolderheshowedushowto____12____theclock.SeveraldaysaftermygrandfatherdiedIenteredthediningroomwithtearsflowing____13____.Theclockstooddeservedly____14____seemingsmallerandnotasmagnificentasbefore.Icouldn’t____15____tolookatit.Yearslatermygrandmothergavemetheclockandthekey.Theoldhousewasquiet.Iopenedtheclockdoorwithmyshakinghand.Then____16____reverently虔诚地Ienteredthekeyandwoundtheclock.Itsprangto____17____Tick-tocktick-tocklifeandchimeswere____18____intothediningroomintohouseandintomy____19____.Inthemovementofthehandsoftheclockmygrandfather____20____again. 10空处应填
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在组距分组汇中，一个组的最小值称为下限，最大值称为上限。上限值和下限值的平均数称为（ ）。

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在组距分组汇中，一个组的最小值称为下限，最大值称为上限。上限值和下限值的平均数称为（）。