Question

an article reported on a long - term study of the effects of hurricanes on tropical streams of a forest. the study shows that a hurricane had a significant impact on stream water chemistry. the following shows a sample of 10 ammonia fluxes in the first year after the hurricane. data are in kilograms per hectare per year. complete parts (a) through (c) below. 91 74 144 144 170 112 57 57 86 152 a. find the mean. the mean is 108.7. (type an integer or decimal rounded to one decimal place as needed.) b. find the median. the median is . (type an integer or decimal rounded to one decimal place as needed.)

Explanation:

Step1: Arrange data in ascending order

$57,57,74,86,91,112,144,144,152,170$

Step2: Calculate median position

Since $n = 10$ (even - numbered data set), the median is the average of the $\frac{n}{2}$th and $(\frac{n}{2}+ 1)$th ordered - data values. $\frac{n}{2}=\frac{10}{2}=5$ and $\frac{n}{2}+1 = 6$.

Step3: Find median

Median=$\frac{91 + 112}{2}=\frac{203}{2}=101.5$

Answer:

$101.5$