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{HELP NEEDED PLEASE HELP ME ASAP!! THIS IS DUE IN 30 MINS MARKING BRAINLIST!!!!}

the stem-and-leaf plot displays the amount of time, in minutes, that 10 students spent practicing their musical instrument one day.


1. 5
2. 0, 2, 5
3. 2, 4
4. 5
5. 3, 6
6. 0
Key: 2|0 means 20


Part A: Calculate the mean and median for the data given. (2 points)

Part B: A student would like to show their teacher that they have practiced long enough for the day. Which measure of center should the student give to their teacher? Explain your answer. (2 points)

Sagot :

A. The mean and the median for the data given are as follows:

  • Mean: 36.2.
  • Median: 33.

B. The measure of center that should be used is the median.

What is shown by the stem-and-leaf plots?

The stem-and-leaf plots shows each measure of the data-set, following the format of the key.

Considering the format of the key, the measures are given as follows:

15, 20, 22, 25, 32, 34, 45, 53, 56, 60.

The mean is given by the sum of all the elements divided by the number of elements, hence:

M = (15 + 20 + 22 + 25 + 32 + 34 + 45 + 53 + 56 + 60)/10

M = 36.2.

The median is the mean of the two middle elements of the data-set, hence it is given as follows:

Median = (32 + 34)/2 = 33.

As the measures are different, the median should be used, as it is not influence by outliers.

More can be learned about stem-and-leaf plots at https://brainly.com/question/8649311

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