Question

here is a stemplot of the high temperature readings in degrees fahrenheit for phoenix, arizona, for each day in july of a recent year.
(a) what percent of days in this month were hotter than 100 degrees fahrenheit (°f)?
round to one decimal place.
%

Explanation:

Step1: Count total days

List all temperatures: 84, 88, 93, 97, 99, 99, 100, 101, 101, 102, 102, 103, 104, 104, 104, 105, 105, 106, 106, 106, 107, 107, 108, 108, 109, 109, 109, 110, 111, 111, 113, 115. Total days = 31.

Step2: Count days >100°F

Temperatures >100: 101,101,102,102,103,104,104,104,105,105,106,106,106,107,107,108,108,109,109,109,110,111,111,113,115. Count = 25.

Step3: Calculate percentage

$\text{Percentage} = \frac{\text{Days >100}}{\text{Total days}} \times 100 = \frac{25}{31} \times 100$

Step4: Round to 1 decimal place

$\frac{25}{31} \times 100 \approx 80.6$

Answer:

80.6 %