a business magazine surveyed its readers about their commute times. commute time (minutes) how many commutes…
a business magazine surveyed its readers about their commute times. commute time (minutes) how many commutes are there in all? commutes
Answer
Explanation:
Step1: Identify data from bar - chart
The frequencies for each time - interval are: 4 for 0 - 4 minutes, 5 for 5 - 9 minutes, 5 for 10 - 14 minutes, 7 for 15 - 19 minutes, 4 for 20 - 24 minutes, 7 for 25 - 29 minutes, 3 for 30 - 34 minutes.
Step2: Sum up the frequencies
$4 + 5+5 + 7+4 + 7+3$ $=(4 + 5)+5 + 7+4 + 7+3$ $=9+5 + 7+4 + 7+3$ $=(9 + 5)+7+4 + 7+3$ $=14+7+4 + 7+3$ $=(14 + 7)+4 + 7+3$ $=21+4 + 7+3$ $=(21 + 4)+7+3$ $=25+7+3$ $=(25 + 7)+3$ $=32+3$ $= 35$
Answer:
35