Asked by Firzah Barawas on Jun 13, 2024
Verified
What are the three tools used to assess variability?
A) range,standard deviation,and variance
B) mean,median,and mode
C) variance,range,and mean
D) mean,standard deviation,and skewness
Variability
The extent to which data points in a data set differ from each other and from the mean of the dataset.
Standard Deviation
A measure of the amount of variation or dispersion of a set of values, indicating how much the individual data points differ from the mean.
Variance
A measure of the dispersion of a set of data points in a dataset, indicating how far each data point lies from the mean.
- Absorb and discern between multiple measures of variability.
- Understand the significance of each measure of variability in data analysis.
Verified Answer
HH
Henry Huang
Jun 15, 2024
Final Answer :
A
Explanation :
Range measures the difference between the highest and lowest value in a dataset, while standard deviation and variance measure the spread of data around the mean. Together, these three tools provide a comprehensive assessment of variability in a dataset. Mean, median, and mode, along with skewness, are measures of central tendency and do not provide information about variability.
Learning Objectives
- Absorb and discern between multiple measures of variability.
- Understand the significance of each measure of variability in data analysis.