Asked by Bavumile Mbambo on May 22, 2024
Verified
Under the normal curve,approximately what percentage of scores falls between -1 and -2 standard deviations below the mean?
A) 14%
B) 34%
C) 68%
D) 95%
Mean
An average of a set of numbers, calculated by dividing the sum of all the values by the number of values.
- Calculate the percentage of scores within specific standard deviations from the mean.
Verified Answer
JJ
Jessica JordanMay 29, 2024
Final Answer :
A
Explanation :
Approximately 34% of scores fall between the mean and one standard deviation below the mean. Therefore, about half of that percentage, or 17%, falls between -1 and -2 standard deviations below the mean. However, since the question asks for the range that is specifically between -1 and -2 standard deviations, we consider the portion of the curve that is more extreme than -1 standard deviation but less extreme than -2 standard deviations, which is approximately 14%.
Learning Objectives
- Calculate the percentage of scores within specific standard deviations from the mean.
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