Test two: mean is 77 and standard deviation is 6. Mark score 87
Find the percentile for all
Which test Mark did better? Why?
2.) What is the the standard deviation for IQ tests? If someone's IQ is 140, how many standard deviation is it above the mean?© BrainMass Inc. brainmass.com June 3, 2020, 11:24 pm ad1c9bdddf
The percentile can be calculated from a standard normal distribution table.
You can find one here: ...
This solution helps explore the following questions:
How to compare distributions with different standard deviations?
How to compute standard deviation for IQ scores?