Answer
$Mean=91.03~grams$
$Median=91.05~grams$
$Mode=90.8~grams~and~91.2~grams$
Work Step by Step
In ascending order: 90.8, 90.8, 90.9, 91.2, 91.2, 91.3
$Mean=\frac{90.8+90.8+90.9+91.2+91.2+91.3}{6}=91.03$
There are 6 observations. So, the median is the mean between the third and the fourth observations:
$Median=\frac{90.9+91.2}{2}=91.05$
Both of the values 90.8 and 91.2 appear twice. They are the mode.
