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An artist sold 10 paintings. Her first two sold for $50 and $350. She sold three at a gallery show for $250, $400 and $1,200. She sold her oil paintings on line for $410, $400 and $375. Family members bought two, one for $200 and another for $280. What is the IQR of the selling price of her paintings?

Respuesta :

Answer:

250-400

Step-by-step explanation:

mhanifa

Answer:

  • 150

Step-by-step explanation:

There are 10 numbers representing the selling prices of paintings.

List the numbers in the ascending order:

  • 50, 200, 250, 280, 350, 375, 400, 400, 410, 1200

Median of the lower half is:

  • 50, 200, 250, 280, 350 ⇒ Q1 = 250

Median of the upper half is:

  • 375, 400, 400, 410, 1200 ⇒ Q3 = 400

The IQR is the difference between the upper and lower medians:

  • IQR = Q3 - Q1 =
  •         400 - 250 = 150

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