What goes the following red symbol mean in an polygon? 2 points
4 cm
A
8 cm
12
a
8
o
4
90 degrees
right angle ==> 90 degrees

the red symbol represent 90° degree or right angle

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.