psy Stats.

posted by .

how do you Calculate percentage when given standard deviation and mean

  • psy Stats. -

    Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score for that score. Change to a percentage.

    If you mean percentile, the percentile is the percentage of scores below that score.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. statistics

    Given a distribution with mean X and standard deviation S, answer the following. 4.1 Determine the mean and standard deviation if constant K is added to each observation 4.2 Determine the mean and standard deviation if constant K is …
  2. Statistics

    1) A Motor Company has purchased steel parts from a supplier for several years and has found that 10% of the parts must be returned because they are defective. An order of 25 parts is received. What are the mean and standard deviation …
  3. math

    Suppose x is a random variable with mean and standard deviation. If a large number of trials is observed, at least what percentage of these values is expected to lie beween mean-2(standard deviation) and mean + 2(standard deviation) …
  4. stats

    Mean is 60 and standard deviation is 7. what percentage is 73 and below.
  5. Stats

    You take and SRS of size 25 from a population with mean 200 and standard deviation of 10. Find the mean and the standard deviation of the sampling distribution of your sample mean.
  6. Coronado

    Compute the standard deviation for stress. Determine where participants fall in relation to the mean. (Create a diagram that depicts where students fall in relation to standard deviations around the mean. Participant Group Fights Stress …
  7. Stats

    Given that a sample is approximately bell-shaped with a mean of 60 and a standard deviation of 3, the approximate percentage of data values that is expected to fall between 54 and 66 is 75% 95% 68% 99.7%
  8. Stats

    A large population has a mean of 200 and a standard deviation of 40. Which one of the following best describes the percentage of measurements that fall in an interval that is within two standard deviations of the mean?
  9. stats

    With the help of following data, determine both the regression equations Psychology (X): Mean= 30, Standard deviation=1.6 Sociology (Y): Mean= 25, Standard deviation= 1.7 Coefficient of correlation = 0.95
  10. stats

    Suppose for a given group of people, the mean height is 5.5 ft with a standard deviation of .25 ft, and let the data fall under a normal distribution.What percentage of the group is between 5 ft and 5.75 ft?

More Similar Questions