Question

this histogram shows the breakdown of exam scores in a math class. if a score of 70 or higher is considered passing, how many students passed the exam? if 70 or higher is considered passing, students passed the exam. (type a whole number.)

Explanation:

Step1: Identify passing - score intervals

The passing - score intervals are 70 - 80, 80 - 90, and 90 - 100.

Step2: Determine frequencies of passing - score intervals

From the histogram, the frequency of the 70 - 80 interval is 8, the frequency of the 80 - 90 interval is 14, and the frequency of the 90 - 100 interval is 8.

Step3: Calculate total number of passing students

Add the frequencies: $8 + 14+8=30$.

Answer:

30