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The table above shows the net change, in dollars, in the price of a sh

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Bunuel
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The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  22 May 2020, 07:59
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The table above shows the net change, in dollars, in the price of a share of a certain stock each day last week. What was the average (arithmetic mean) daily net change, in dollars, for the 5-day week?


A. \(-\frac{1}{2}\)

B. \(+\frac{1}{4}\)

C. \(+\frac{1}{2}\)

D. \(+\frac{5}{4}\)

E. \(+\frac{5}{2}\)


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Abhishek009
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The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  22 May 2020, 09:07
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Bunuel wrote:

The table above shows the net change, in dollars, in the price of a share of a certain stock each day last week. What was the average (arithmetic mean) daily net change, in dollars, for the 5-day week?


A. \(-\frac{1}{2}\)

B. \(+\frac{1}{4}\)

C. \(+\frac{1}{2}\)

D. \(+\frac{5}{4}\)

E. \(+\frac{5}{2}\)


PS21174


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1.png


\(\frac{2.5 - 1.25 - 0.125 + 0 + 1.375}{5} =0.5 \), Answer must be (C)


PS : THESE ARE THE CASES WHERE FRACTION DECIMAL EQUIVALENT COMES HANDY
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Re: The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  28 Nov 2020, 15:28
\(2.5 - 1.25 - 0.125 + 1.375 = 2.5 \)

\(\frac{2.5 }{ 5} = 0.5\)

Answer is C.
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Re: The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  02 Feb 2021, 10:56
Bunuel,
I noticed the usage of the phrase "net change", does it add an information that we should take into consideration (what is the importance of adding that phrase) ?
I just summed all the elements that are included in the table .
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jotapepe
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Re: The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  19 Oct 2021, 12:19
Easier to convert it all to improper fractions to mixed numbers (denominator x whole number + numerator)

Then find a common denominator (8)

Do the math and multiply by the reciprocal (which is the same as dividing by the number of occurrences to get the mean)
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Re: The table above shows the net change, in dollars, in the price of a sh [#permalink] New post  12 Dec 2022, 00:14
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Re: The table above shows the net change, in dollars, in the price of a sh [#permalink]
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