Statistical analysis is useful for which of the following in an analysis? A. mak

ID: 3276688 • Letter: S

Question

Statistical analysis is useful for which of the following in an analysis?

A. making inferences about an entire population based on a smaller subset of the population

B. taking into account systematic errors

C. communicating the range of values that can reasonably expected to contain the true value

D. Both A and C

E. Both B and C

Which of the following can be applied to test for the presence of an outlier in a data set?

A. t-test of means

B. exploratory data analysis

C. Dixon test (Q-test)

D. hypergeometric distribution

E. none of the above

Perform the calculation of percent purity shown below and select the correct answer, taking significant figures into consideration.

((0.344-0.0211)/0.2001) mg/L x (100.0 mL/7.50 mL) x (0.5000 L/202.5 mg) x 100 =

A. 5.3%

B. 5.313%

C. 5.31%

D. 5%

E. 5.3126%

1 )D. Both A and C

2) C. Dixon test (Q-test)

3) =((0.344-0.0211)/0.2001)*(100/7.5)*(0.5/202.5)*100 =5.3%

option A is correct (cause 202.5 dictates how many digits needs to be in the end)

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