Statistics AMDM

Weighted Averages

Friday, 1/13/2021

What Are Weighted Averages?

Fill in the blanks on your notes.

·  A weighted average is an average where different __IMPORTANCE(WEIGHT)_ is placed on different parts of the data set.   ·   To find the weighted average you _MULTIPLY_ the category average by the weight given to the category.   ·  For _PERCENTAGES(GRADES)_, you add your weighted averages.   ·  For other types, you add your weighted values and _DIVIDE BY THE NUMBER OF VALUES_.

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Example #1

​a) What would your course average for Mr. Tat’s class be?

 

 

 

 

Example #1

b) If you had the opportunity to retake your final exam, what score would you need to get if you want a 90% average in the class?

 

Now You Try #1...

Complete the problem in your notes.

If you had the following grade shown below, determine what your grade would be in Mr. Tat’s class.

Round to the nearest tenth.

Some text here about the topic of discussion

Fill in the Blank

Now You Try #1

Complete the Now You Try on your notes, then input your solution here.

If you had the following grade shown below, determine what your grade would be in Mr. Tat’s class.

Round to the nearest tenth.

Example #2

A new cars salesperson, sold an average of $28,000 per day for the first 5 days she worked.  The next 3 days she worked, she sold an average of $42,000.  How much did she sell on average per day over the entire 8 days?

Subject | Subject

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Example #3

Use the information about batting & slugging averages on your notes for this example and Now You Try #2

Freddie wants to calculate his batting average and slugging percentage stats for his highlight package. If Freddie hits 42 singles, 12 doubles, 4 triples and 14 homeruns in his 230 times at bat his senior year.

 a)      Calculate Freddie’s batting average for his senior year.

 

 

 

Example #3

Use the information about batting & slugging averages on your notes for this example and Now You Try #2

Freddie wants to calculate his batting average and slugging percentage stats for his highlight package. If Freddie hits 42 singles, 12 doubles, 4 triples and 14 homeruns in his 230 times at bat his senior year.

b)      Calculate Freddie’s slugging average for his senior year

Fill in the Blank

NOW YOU TRY #2A

Jacob is a freshman in high school and wants to see if his batting average has improved since 8^th grade. In his 200 at bat, he had 18 singles, 14 doubles, 4 triples and 7 homeruns.

Round to the thousandths (three decimal places) place.

 

a)      Calculate Jacob's batting average.

Fill in the Blank

NOW YOU TRY #2B

Jacob is a freshman in high school and wants to see if his batting average has improved since 8^th grade. In his 200 at bat, he had 18 singles, 14 doubles, 4 triples and 7 homeruns.

Round to the thousandths (three decimal places) place.

 b) Calculate Jslugging average.