17 Questions
Which measure of variation is used to describe the degree to which scores or observations are scattered?
Standard deviation
What does the quartile deviation measure?
Homogeneity of scores
How does Professor Cruz's class performance differ from Professor Perez's?
Lower scatter
What do measures of central tendency describe in a distribution of scores?
Central point
Which measure is not considered a measure of variation?
Interpretation
What is the primary difference between measures of central tendency and measures of variation?
Central point description
What is the size of the class interval?
6
What is the midpoint of the third class interval?
39.5
What is the lower limit of the 6th class interval?
55
What is the upper boundary of the 5th class interval?
54.5
How many mayors are younger than 54.5 years?
48
What is the most reliable and sensitive measure of central tendency?
Mean
In what form does the mean come for ungrouped data?
Simple Mean and Weighted Mean
Which measure of central tendency is commonly referred to as the 'average'?
Mean
How is the simple mean calculated for a set of values?
Divide the sum of all values by the total number of values
What formula is used to calculate the simple mean for ungrouped data?
$\overline{x} = \frac{1}{n} \sum\limits_{i=1}^{n} x_i$
In a 25-item test, if the scores are 12, 15, 14, 16, 17, 18, and 20, what is the mean score of the students?
$15$
Test your understanding of calculating measures of variation such as range, semi inter-quartile range, mean deviation, variance, and standard deviation, and interpreting these values. The quiz also covers the use of digital technology for calculation.
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