Step-by-step explanation:

MEAN: (Sum of all the observations / Total number of observations)

= 13,10,13,12,13,10,11,5

= 87

8

= 10.875

MEDIAN: ( the middle number of a data )

= 13,10,13,12,13,10,11,5

= 12,13 is a middle number

= 12+13 ÷ 8

= 13.625

MODE: ( the value that has a higher frequency in a given set of values.)

= 13,10,13,12,13,10,11,5

= 13 is a higher frequency

= 13

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