The number of e-mails a friend received each day over the last 20 days is shown below. What number of days did she receive 19 or fewer e-mails in a day?
A table has 3 columns labeled "Emails", "Freq." with 5 rows per column.
• Row 1 under Emails: 0 hyphen 9
• Row 2 under Emails: 10 hyphen 19
• Row 3 under Emails: 20 hyphen 29
• Row 4 under Emails: 30 hyphen 39
• Row 5 under Emails: 40 hyphen 49
• Row 1 under Freq.: 4
• Row 2 under Freq.: 7
• Row 3 under Freq.: 4
• Row 4 under Freq.: 4
• Row 5 under Freq.: 1
1 answer
Adding up the frequencies for e-mails from 0-9 and 10-19, we find that she received 11 or fewer e-mails in a day 11 times over the last 20 days. Therefore, she received 19 or fewer e-mails in a day for 11 days out of the last 20.