125. Задачка по химии №012 591

In the experimental measurement of the atomic mass of carbon, the following 11 results were obtained: 12.0112; 12.0210; 12.0102; 12.0118; 12.0111; 12.0106; 12.0113; 12.0101; 12.0097; 12.0095; 12.0080.
A) Calculate the average
B) Calculate the absolute value of the standard deviation
C) Express the atomic mass of carbon using confidence limits at 95% probability
D) an additional result of 12.0138 is received. Can it be discarded or should it be included in the calculated data as acceptable?

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.