Central Tendency Measures
Measures of Location
Measures of Position
Coeficiente de variación
Medidas de Forma
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Which of the following is NOT a measure of central tendency?
What is the mean test score for the 15 scores listed below?
5 6 4 7 8
1 2 0 6 9
8 4 8 6 3
A small business recorded the number of computers that were faulty each day for 10 days:
1 1 2 2 2 2 3 3 3 3
Find the mode.
2 and 3
The is no mode
The number of minutes a train is late each day for a period of 10 days are:
0 1 2 2 2 3 3 3 3 5
Find the median.
2 and 3
There is no median
Second quartile coincides with the
A group of friend have the following hair colours:
black blonde black blonde red
brown black brown brown blonde
The mean is:
The mean cannot be calculated
Which of the following is NOT a measure of dispersion?
The coefficient of variation is not very useful when:
the mean value is near zero
the extrema values are very big
there coefficient of variayion can always be calculated
A distribution is called leptokurtic when:
the excess kurtosis is positive
the excess kurtosis is zero
the excess kurtosis is negative
When the skeness is positive:
the distribution is skewed to the right
the distribution is symmetrical
the distribution is skewed to the left