Question the-ba

3.3 One-Variable Data & Statistics - Mean, median, mode, range
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The bar graph summarizes the charge, in kilowatt-hours kWh, a battery received each day for 15 days.

76543210Number of days089111623Charge (kWh)
  • The data for the 6 egories are as follows:
    • 0 kilowatt-hours: 6
    • 8 kilowatt-hours: 1
    • 9 kilowatt-hours: 2
    • 11 kilowatt-hours: 4
    • 16 kilowatt-hours: 1
    • 23 kilowatt-hours: 1

For how many of these 15 days did the battery receive a charge of 0 kWh?

A.

0

B.

1

C.

4

D.

6

The bar graph summarizes the charge, in kilowatt-hours kWh , a battery received each day for

Medium-difficulty · SAT Math · One-Variable Data & Statistics — Mean, median, mode, range. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.

Answer explanation

Choice D is correct. It's given that the bar graph summarizes the charge, in kilowatt-hours kWh, a battery received each day for 15 days. The height of each bar in the bar graph shown represents the number of days the battery received the charge, in kWh, specified at the bottom of the bar. The bar for a charge of 0 kWh reaches a height of 6 . Therefore, the battery received a charge of 0 kWh for 6 of these days.

Choice A is incorrect. This is the charge, in kWh, that the battery received, not the number of days the battery received this charge.

Choice B is incorrect. This is the number of days the battery received a charge of either 8 , 16 , or 23 kWh.

Choice C is incorrect. This is the number of days the battery received a charge of 11 kWh.