A student group measures the salinity of a water sample three times, obtaining the following results: 36.1, 35.7, and 35.8 ppt. Calculate the sample standard deviation of these measurements. Enter your result in decimal notation with an appropriate number of significant figures. Enter only the numbers, omitting the units.

Step-by-step explanation:

Standard Deviation where μ=mean, N=number of data

The results are:x= 36.1, 35.7, and 35.8

First, we determine the mean

Mean, μ= (36.1 + 35.7 + 35.8)/3=107.6/3=35.9

Next, for each x, we determine the mean deviation, x-μ

If x=36.1, |x-μ|=|35.1-35.9|=0.8 and =0.64

If x=35.7, |x-μ|=|35.7-35.9|=0.2 and =0.04

If x=35.8, |x-μ|=|35.8-35.9|=0.1 and =0.01

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer