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Ten students compared the amount (in dollars) they spent on books each week. The box plot shows the results. The median amount they spent each week is ____ ($20,$30,$40,$50) . The difference of the first and third quartiles of the data set is ____ ($15,$30,$45,$60).

Ten students compared the amount in dollars they spent on books each week The box plot shows the results The median amount they spent each week is 20304050 The class=

Respuesta :

The median is 50.
The first quartile is 20, the third is 65, the difference is 45.
frika

The box plot contains a box and 5 points:

  1. 1st point is the left endpoint (the smallest number);
  2. 5th point is the right endpoint (the greatest number);
  3. 2nd point is [tex]Q_1[/tex] - first quartile;
  4. 3rd point is [tex]Q_2[/tex] - second quartile = median;
  5. 4th point is [tex]Q_3[/tex] - third quartile.

Then the median is $50,  and [tex]Q_3-Q_1=\$65-\$20=\$45.[/tex]

Answer: $50; $45.

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