8) Two different analytical methods are compared for determining Ca. The following are two sets of data. Set 1 Set 2 155.779 155.784 155.787 155.787 155.813 155.765 155.781 155.793 i. Determine the mean and the standard deviation in Set 1. ii. Calculate the 95% confidence limit for data in Set 1. ii. Identify a possible outlier in Set 2. Use the Q-test to determine whether it can be retained or rejected at 95% confidence level.
8) Two different analytical methods are compared for determining Ca. The following are two sets of data. Set 1 Set 2 155.779 155.784 155.787 155.787 155.813 155.765 155.781 155.793 i. Determine the mean and the standard deviation in Set 1. ii. Calculate the 95% confidence limit for data in Set 1. ii. Identify a possible outlier in Set 2. Use the Q-test to determine whether it can be retained or rejected at 95% confidence level.
Chapter5: Errors In Chemical Analyses
Section: Chapter Questions
Problem 5.12QAP
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Transcribed Image Text:8) Two different analytical methods are compared for determining Ca. The following
are two sets of data.
Set 1
Set 2
155.779
155.784
155.787
155.787
155.813
155.765
155.781
155.793
i.
i.
Determine the mean and the standard deviation in Set 1.
Calculate the 95% confidence limit for data in Set 1.
Identify a possible outlier in Set 2. Use the Q-test to determine whether it
can be retained or rejected at 95% confidence level.
ii.
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