One-Variable Data: Distributions and Measures of Center and Spread

SAT Math· difficulty 3/5

A bar graph shows weekly sales: Week 1 = 200, Week 2 = 250, Week 3 = 300, Week 4 = 280. What is the average weekly sales?

  • A

    260

  • B

    257.5

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  • C

    250

  • D

    275

Explanation

Average = (200+250+300+280)/4=1030/4=257.5(200 + 250 + 300 + 280)/4 = 1030/4 = 257.5.

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