Asked by Arely Villalobos on Jun 13, 2024
Verified
What is the standard deviation for the following set of scores: 20,24,26,22,18,16,18?
A) 12.95
B) 3.60
C) 6.55
D) 24
Scores
Quantitative values assigned to individuals or items for the purpose of evaluation or measurement.
- Ascertain the standard deviation and variance from a particular data set.
Verified Answer
KW
kishna woodsJun 15, 2024
Final Answer :
B
Explanation :
The standard deviation is calculated by finding the square root of the average of the squared deviations from the mean. For this set, the mean is 20.86, and the squared deviations from the mean are 0.74, 9.86, 26.45, 1.30, 8.16, 23.52, and 8.16 respectively. The average of these squared deviations is 12.9, and the square root of 12.9 is approximately 3.60.
Learning Objectives
- Ascertain the standard deviation and variance from a particular data set.