Representation Of Data Flashcards
1
Q
How do you calculate the frequency density for a histogram?
A
Frequency Density
frequency / class width
2
Q
How do you calculate outliers?
A
= Q1 - 1.5(Interquartile range)
= Q3 + 1.5(Interquartile range)
3
Q
State the equation for skewness?
A
Skewness
3(mean - median) / standard deviation
4
Q
State the measures of location if data is symmetrically skewed?
A
Mode = Median = Mean
5
Q
State the measures of location if data is positively skewed?
A
Mode < median < mean
6
Q
State the measures of location if data is negatively skewed?
A
Mode > median > mean
7
Q
What kinda of data do histograms depict?
A
Continuous data
8
Q
What is the underlying feature of a bar in a histogram?
A
It is proportional to the group frequency.
