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Bunuel
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Bunuel
The table shows, for one recent month, visitor numbers for 8 city library branches. Each entry is a count of people rounded down to the nearest hundred.

BranchAverage weekday visitorsAverage weekend visitorsRecord single-day visitors
Ash130014003800
Birch150015003600
Cedar140014003100
Dogwood90012002300
Elm160016004200
Fir160016004200
Grove120014002700
Holly110013002600

For each statement below, select True if it can be verified to be true based on the table provided. Otherwise, select Not necessarily true.
Question 1: The median of the average weekend visitor numbers is smaller than the median of the average weekday visitor numbers.

If we arrange the average weekend visitor number , we get the values as 1200, 1300, 1400, 1400, 1400, 1500, 1500, 1600.

The median value = 1400.

let’s arrange the average weekday visitor numbers, we get the values as 900, 1100, 1200, 1300, 1400, 1500, 1600, 1600.

The median value = (1300+1400)/2 = 1350.

1400 is NOT Smaller than 1350.

Hence, NOT NECESSARILY TRUE.

Question 2: The branch with the highest record single-day visitor number has at least 75 percent more visitors than the branch with the lowest such number.

The highest record of single day visitor number is for Branch : Elm and Fir - each with a value of 4200.

The lowest number of single day visitor number is for branch : Dogwood - with a value of 2300.

75% more = (1 + (3/4)) = 7/4

2300 *(7/4) = 4025.

4200 is greater than 4025.

Hence, True.

Question 3: The four branches with the least average weekday visitor numbers are the same four branches with the least average weekend visitor numbers.

The four branches with the least average weekday visitor numbers are :

900, 1100, 1200, 1300, 1400, 1500, 1600, 1600. The values of the first 4 numbers correspond to the branches :

Dogwood, Holly, Grove and Ash.

The four branches with the least average weekend visitor numbers are:

Dogwood, Holly, ( Grove, Cedar and Ash).

Hence, Not Necessarily true.
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"The branch with the highest record single-day visitor number has at least 75 percent more visitors than the branch with the lowest such number"

Hi Bunuel, bb I interpreted the above statement as "Branch Elm/Fir has more visitors than the branch Dogwood". But in the solution why we are comparing the Record sing day visitor number? I marked it not necessarily true because of that, as if comparison is of the whole month, we cannot interpret that it is always at least 75% more.
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"The branch with the highest record single-day visitor number has at least 75 percent more visitors than the branch with the lowest such number"

Hi Bunuel, bb I interpreted the above statement as "Branch Elm/Fir has more visitors than the branch Dogwood". But in the solution why we are comparing the Record sing day visitor number? I marked it not necessarily true because of that, as if comparison is of the whole month, we cannot interpret that it is always at least 75% more.

Here, “such number” refers to the record single-day visitor number mentioned earlier in the sentence.

So the statement is comparing the highest and lowest values in the “Record single-day visitors” column, not total visitors for the whole month.
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Hi Bunuel, thanks, but it is still not clear to me.

The branch with the highest record single-day visitor number has at least 75 percent more visitors than the branch with the lowest such number.

Below is the break down I did.

"The branch with the highest record single-day visitor number" - i.e. Branch Elm/Fir
"..the branch with the lowest such number" - i.e. Branch Dogwood

If I put them together -> Branch Elm/Fir has at least 75 percent more visitors than the branch Dogwood.

Bunuel


Here, “such number” refers to the record single-day visitor number mentioned earlier in the sentence.

So the statement is comparing the highest and lowest values in the “Record single-day visitors” column, not total visitors for the whole month.
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gullyboy09
Hi Bunuel, thanks, but it is still not clear to me.

The branch with the highest record single-day visitor number has at least 75 percent more visitors than the branch with the lowest such number.

Below is the break down I did.

"The branch with the highest record single-day visitor number" - i.e. Branch Elm/Fir
"..the branch with the lowest such number" - i.e. Branch Dogwood

If I put them together -> Branch Elm/Fir has at least 75 percent more visitors than the branch Dogwood.



For me, the statement is clear. The phrase “such number” refers to the “record single-day visitor number,” so we compare the values in that column only, not total monthly visitors.

If this wording is still confusing, you can simply ignore the question and move on.
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