Exciting Entertainment
1 answer:
We can deduce that the student's gender provides information about their entertainment choices.
<u>Given the following data:</u>
- Expenses on digital music = $2.6 billion dollars.
- Expenses on video games = $24.7 billion dollars.
The data was gathered from a random survey which was conducted by sixth-grade students to determine the number of digital music (songs) that was downloaded by each student to their respective media player in the past two months as shown in the table in the image attached below.
<h3>What is a median?</h3>A median can be defined as the <u>middle number</u> (center) of a sorted data set, which is when the data set is arranged from the least to greatest (ascending order) or greatest to least (descending order).
<u>For the </u><u>girls</u><u>:</u>
- Median = 50.
<u>For the </u><u>boys</u><u>:</u>
- Median = 33.
A mean refers to a ratio of the sum of the total number in a data set to the frequency of the data set.
<u>For the </u><u>girls</u><u>:</u>
- Mean = 46.
<u>For the </u><u>boys</u><u>:</u>
- Mean = 34.
In this context, we can deduce that the student's gender provides information about their entertainment choices.
Read more on median here: brainly.com/question/9550536
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Your set is 2, 5 and 8.
In order to calculate the standard deviation, first, you need to calculate the mean of the scores:
m = (2 + 5 + 8) / 3
= 15 / 3
= 5
Then, find the variance: subtract the mean from each value, square the results, sum them up and divide it by the number of scores.
(2 - 5)² = 9
(5 - 5)² = 0
(8 - 5)² = 9
Therefore:
v = (9 + 0 + 9) / 3
= 18 / 3
= 6
The standard deviation is the square root of the variance:
σ = √6
= 2.45
In conclusion, the standard deviation can be calculated by the formula:
In order to calculate the standard deviation, first, you need to calculate the mean of the scores:
m = (2 + 5 + 8) / 3
= 15 / 3
= 5
Then, find the variance: subtract the mean from each value, square the results, sum them up and divide it by the number of scores.
(2 - 5)² = 9
(5 - 5)² = 0
(8 - 5)² = 9
Therefore:
v = (9 + 0 + 9) / 3
= 18 / 3
= 6
The standard deviation is the square root of the variance:
σ = √6
= 2.45
In conclusion, the standard deviation can be calculated by the formula: