Answer:
a - 30.5
b - 31
c - 31
d - 2
Step-by-step explanation:
Mean is average:
31,29,31,30,31,30,31,31,30,31,30,31
366/12
30.5
Median is the middle of the data points.
Line data points up in order from least to greatest.
29,30,30,30,30,31,31,31,31,31,31,31
12/2=6
Since there is an even amount data points the median is the mean of the two middle data points:
Middle data points: 31,31
31
Mode is the most common data point.
It would be 31.
Range is highest point subtracted by lowest point.
31-29=2
