The range of her scores is 17.
Explanation
Mindy's scores in five tests are: [tex]95, 86, 78, 80, 91[/tex]
First, rearranging the data in numerical order, we will get ........
[tex]78, 80, 86, 91, 95[/tex]
'Range' is the difference between the highest and lowest values.
In the above data set, highest value is 95 and lowest value is 78
So, the range of her scores will be: [tex]95-78= 17[/tex]
