a technical assistance manager monitored his customers wait times. technical assistance wait times (minutes)…
a technical assistance manager monitored his customers wait times. technical assistance wait times (minutes) how many people waited in all? people
Answer
Explanation:
Step1: Identify the number of people in each time - interval
From the bar - chart: In the 1 - 5 minutes interval, the number of people is 1. In the 6 - 10 minutes interval, the number of people is 3. In the 11 - 15 minutes interval, the number of people is 4. In the 16 - 20 minutes interval, the number of people is 7. In the 21 - 25 minutes interval, the number of people is 4. In the 26 - 30 minutes interval, the number of people is 5.
Step2: Sum up the number of people in all intervals
$1 + 3+4 + 7+4 + 5$ $=(1 + 3)+4 + 7+4 + 5$ $=4+4 + 7+4 + 5$ $=(4 + 4)+7+4 + 5$ $=8+7+4 + 5$ $=(8 + 7)+4 + 5$ $=15+4 + 5$ $=(15 + 4)+5$ $=19+5$ $=24$
Answer:
24