Question

Harry measured the temperature at 2 p.m. at the same spot in his garden and recorded his results to the nearest degree (°F) for each day in the year (365 days).

On approximately what percent of the days was the 2 p.m temperature above 40°F but less than 70°F?

• A. Approximately 70%
• B. Approximately 50%
• C. Approximately 60%
• D. Approximately 80%

Answer 1

The correct option is A

Approximately 70%

The number of days for which the temperature was above 40°F but less than 70°F is found by adding the frequencies for the groups 40 to 50, 50 to 60, and 60 to 70

Which is (approximately) 132 + 76 + 54 = 262

As a percent of the year, this is:

$\frac{262}{365}\times 100$

or approximately 70%