Probability sampling<span> is when everyone in the group you are studying has an equal chance of participating.</span>
Answer:
a
Step-by-step explanation:
Answer: 7 Courts
Step-by-step explanation: One US gallon equals for US courts, so 1 3/4 x 4 is seven
The average of scores is 160.5
Step-by-step explanation:
Mean is the sum of all values divided by the number of values.
Given scores are:
138,151,198,147,156, and 173
The formula for average score is given by:

Putting values

The average of scores is 160.5
Keywords: Mean, Average
Learn more about mean at:
#LearnwithBrainly
In order to find the average you have to add up all the data values and then find the sum of the data values.

So on average he ran about 82.5 miles.