Finding areas for z using excel

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Finding areas for z using excel

  1. 1. FINDING AREAS FOR Z AND USING Z IN FINDING X GIVEN AREA USING EXCEL FINDING AREAS FOR Z1. Click Formulas2. Function3. Choose NORMDIST4. OK
  2. 2. 5. Type the value of x in the X box6. Type the value of the mean in the Mean box7. Type the value of the standard deviation in the Standard_dev box8. In the Cumulative box type true9. Notice the results are for the area from the far left of the distribution up to X. If you are interested in the area between the mean and X, you will need to subtract .500 from the cumulative area.
  3. 3. USING Z IN FINDING X GIVEN AREA USING EXCEL1. Click Formulas2. Function3. Choose NORMINV4. OK
  4. 4. 5. Type the probability value in the Probability box6. Type the mean value into the Mean box7. Type the standard deviation into the Standard_dev box8. Notice the results are for the area from the far left of the distribution up to X. If you are interested in the area between the mean and X, you will need to subtract the cumulative area from .500.

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