please help with this Statistical Calculations

1.Given the following set of numbers4,7,2,6,5,3,4,1: Calculate the Mean ______, Calculate the Median _____, Calculate the Mode ______.

2.If the mean for level I Glucose control is 100 mg/dL and 1 standard deviation is 5 mg/dL, what is the : +/- 1 standard deviation range? ____________, +/- 2 standard deviation range? ________, & +/- 3 standard deviation range? ____________.

3.Given the following set of numbers 25,27,26,21,25,30,24,28: Calculate the Mean _____, Calculate the median ______, Calculate the mode ______.

4.If the mean for level II glucose control is 250 mg/dL and 1 standard deviation is 15 mg/dL, what is the: +/- 1 standard deviation range? ____________, +/- 2 standard deviation range? _______, & +/- 3 standard deviation range? ___________.

5.Given this set of numbers, solve the following problems: 45,49,43,49,51,50,47,48.

a.Calculate the mean for the set.

b.Calculate the median number in the set.

c.Calculate the modal number in the set.

d.Calculate the variance for the set.

e.Calculate the standard deviation of the set.

f.Calculate the CV of the set.

6.Given the following set of glucose results, solve the following problems: 420 mg/dL, 430 mg/dL, 425 mg/dL, 430 mg/dL, 429 mg/dL, 427 mg/dL, 433 mg/dL.

a.Calculate the mean for the set.

b.Calculate the median glucose value.

c.Calculate the modal glucose value.

d.Calculate the variance for the set.

e.Calculate the CV of the set.

7.A new supervisor performs 30 replicate white blood cell determinations on the same tube of blood on two different hematology analyzers.The CV of the determinations on analyzer A is 1.4%, and the CV of the determinations on analyzer B is 2.0%.Which analyzer is more precise?

a.Analyzer A

b.Analyzer B

8.Calculate the CV for a group of quality control results assayed for glucose.The mean value is 450 mg/dL, and the standard deviation is 15 mg/dL.