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CAHSEE ELA 1.1 Writing Strategies. Which of the following sentences, if placed before sentence 1, would be the most effective introductory sentence?
CAHSEE ELA 1.2 Writing Strategies. Which of the following statements is supported by details or evidence from the student's draft?
CAHSEE ELA 1.3 Writing Strategies. What is the best way to combine sentences 10 and 11?
CAHSEE Math 1.1 Statistics, Data, and Probability I 406 Views
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Description:
Statistics, Data, and Probability I: Drill Set 1, Problem 1. What is the mean yearly salary?
Transcript
- 00:03
Okay, here's the boring, unshmoopily-voiced question...
- 00:07
The yearly salaries of eight employees at a company are shown below...
- 00:11
in thousands of dollars...
- 00:12
What is the mean yearly salary?
- 00:14
And here are the answers...
Full Transcript
- 00:22
OK, so we have 8 people making a range of salaries and
- 00:25
the question is asking us for the mean.
- 00:28
We are basically being tested on whether or
- 00:30
not we know the definition of the term.
- 00:32
Mean simply means average.
- 00:36
So it has nothing to do with the employees not being given Christmas off.
- 00:39
To get the average, we add up the numbers we are given and then divide our answer by
- 00:44
the total number of items, or elements.
- 00:48
So in this case, we would add...
- 00:50
25, 28, 32, 35, 44, 57, 84, and 103...
- 00:55
we'll leave off the thousands for now to make the math simpler...
- 00:57
...and we get a total of 408.
- 01:00
However, the problem is asking us for the mean, not the sum.
- 01:04
So we still need to divide by the total number of elements.
- 01:07
To get the average or mean we divide 408 by 8... and get 51.
- 01:15
But 51... what? Dollars?
- 01:17
We have a feeling the employees wouldn't be happy making less than 15 cents a day.
- 01:21
That wouldn't even cover their morning latte.
- 01:25
Remember that we have to convert our number back into thousands...
- 01:33
...so 51 thousand dollars is the average salary for our 8 employees.
- 01:38
The answer is D.
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