Average deviation formula chemistry

    • [DOC File]CALCULATION OF REPEATABILITY AND REPRODUCIBILITY

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      Repeatability standard deviation r and reproducibility standard deviation R are defined as formula eq.2 and eq.3. (2) (3) ... (20) is the average of the estimated within laboratory variance of the labotratories. The expectation of sri2 is , (21) i.e. it is biased; its bias is corrected by multiplication with n/(n-1), as in the formula for sr2. The estimate of the between laboratory variance L2 ...

      standard deviation formula chemistry

    • [DOC File]CHEMISTRY 110 - Dr

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      Class Average Standard Deviation A 44.3 5.3 B 47.9 6.5 C 34.0 2.5 D 44.8 4.9 E 45.6 3.7 The unknown sample was prepared to contain 46.0 mg of caffeine. (10 points) What is the average and uncertainty for the results reported for all . five. laboratory classes? 216.6 ± 10.7 = 43.3 Rel. uncert. = (10.7/216.6)x100=4.9%. 5 (8 points) Using the Q test, which class data (if any) is an outlier at ...

      chemistry standard deviation calculator

    • [DOC File]CHEMISTRY 110 - Dr

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      Class Average Standard Deviation A 44.3 5.3 B 47.9 6.5 C 34.0 2.5 D 44.8 4.9 E 45.6 3.7 The unknown sample was prepared to contain . 46.0 mg. of caffeine. (10 points) What is the average and uncertainty for the results reported for all . five. laboratory classes? (8 points) Using the Q test, which class data (if any) is an outlier at the 90% confidence level? (2 point) Which class was the most ...

      median absolute deviation

    • [DOC File]Statistical Calculations

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      The formula for calculating the standard deviation is given below: When this formula is applied to the above sample data a standard deviation of 0.050 is obtained to a confidence limit of 90%. This means that 68% of the values lie within ±0.050 units of the mean or within the range of 5.330 to 5.430 (5.380 ± 0.050) for the above sample data.

      standard deviation computation formula

    • [DOC File]Chemistry 103 Laboratory

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      The formula for calculating average of the values in cells N2 and N3 is =average(N2:N3), and that of standard deviation is =stdev(N2:N3). Once you are done with the calculations write out sample formulas for the calculated values at the bottom of the Excel spread sheet such as: Equations Used: VA1 = RawData!C2 - RawData!F2 %A1 = A2*0.0.340 Average = Average(N2:N3) Std. dev. = stdev(N2:N3 ...

      deviation from mean

    • [DOC File]Name

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      3. For each reading, calculate the PV product and enter it in the fifth column of the data table. Calculate the average and standard deviation of your PV products. 4. Use your average PV product and the room temperature to calculate the moles of enclosed gas. For this calculation, use R = 0.08206 L atm K–1 mol–1 and T (K) = T (oC) + 273.15 ...

      calculate mean and standard deviation

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