Question

the following pulse rates were recorded for a group of 15 students. find the mode.
77, 79, 65, 67, 70, 63, 81, 70, 69, 64, 69, 74, 76, 85, 71
find the mode. select the correct choice below and, if necessary, fill in the answer box to complete your choice.
a. the mode(s) is/are
(type an integer or a decimal. use commas to separate answers as needed.)
b. there is no mode.

Explanation:

Step1: Count the frequency of each number

• \(77\) appears \(1\) time.
• \(79\) appears \(1\) time.
• \(65\) appears \(1\) time.
• \(67\) appears \(1\) time.
• \(70\) appears \(2\) times.
• \(63\) appears \(1\) time.
• \(81\) appears \(1\) time.
• \(69\) appears \(2\) times.
• \(64\) appears \(1\) time.
• \(74\) appears \(1\) time.
• \(76\) appears \(1\) time.
• \(85\) appears \(1\) time.
• \(71\) appears \(1\) time.

Step2: Identify the number(s) with the highest frequency

The numbers \(70\) and \(69\) both have a frequency of \(2\), which is higher than the frequency of other numbers.

Answer:

A. The mode(s) is/are \(69,70\)