Answer:
Mean=74.78
Median=78
Mode=78
Step-by-step explanation:
1. First order the data set from the from least to greatest:
15 34 71 75 75 78 78 78 82 87 90 90 94 100
2. To find the mean, add all the numbers and divide the result by the number of data.
[tex]x=\frac{15+34+71+75+75+78+78+78+82+87+90+90+94+100}{14}[/tex]
[tex]x=\frac{1047}{14}[/tex]
3. Since you have an even data set, to find the median you take the two values of the middle of the data set and find the average between them:
[tex]median=\frac{78+78}{2}[/tex]
[tex]median=\frac{156}{2}[/tex]
[tex]median=78[/tex]
4. The mode is the most repeated value, in this case, value 78 is repeated 3 times so this value is the mode of the data set.
