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1. Jack is a farmer and he wants to know the mean weight of all the potatoes in a sack. 

He randomly selects 10 potatoes and weighs them. Their weights, to the nearest ounce are 5, 8, 9, 11, 7, 7, 8, 9, 12, and 7.

 

What is the best estimate of the mean weight of all the potatoes in the sack?

Round to the nearest ounce.

 

 

2. Which situation involves descriptive statistics?

 

A bowler’s scorecard shows he threw a strike on one fifth of his throws that night.

An employer surveys a dozen employees to estimate how many employees would work on a certain holiday.

A recent poll shows that the president’s approval rating is at an all-time low of 40%.

The sample indicates that about 5% of the cargo is damaged.

jbouyer  Mar 21, 2018
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1. We can calculate the mean by adding all the numbers and dividing it by how many numbers there are.

So, 5+8+9+11+7+7+8+9+12+7=83/10=8.3 , thus \(\boxed{8.3}\)

tertre  Mar 21, 2018

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