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This video covers how to set up a stem and leaf plot and use it to find the mean and median of a set of numbers.
CAHSEE Math 5.3 Statistics, Data, and Probability II 183 Views
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Description:
Statistics, Data, and Probability II Drill 5 Problem 3. Based on this plot, which of the following statements is the most accurate?
Transcript
- 00:03
Here’s your shmoop du jour…
- 00:05
The salaries of 20 employees and the number
- 00:07
of years that they worked at their boomerang company are graphed in the following plot.
- 00:12
We can’t tell you how excited they are that their graph forms the shape of a boomerang.
- 00:16
They’re an easily excited bunch.
Full Transcript
- 00:18
Based on this plot, which of the following statements is the most accurate?
- 00:23
And here are the potential answers:
- 00:26
OK… this question shows a scatter plot with
- 00:29
an obvious trend and asks us to, uh… do something with it.
- 00:34
So we have to just go through the potential answers.
- 00:36
We have:
- 00:38
A. “The longer a person works for the company, the higher his/her salary will be.”
- 00:43
Well, A is kinda true – until about year 5 when everything flat lines.
- 00:48
We need the BEST answer here so we’re gonna keep reading.
- 00:51
B. “Every employee is paid approximately the same amount for the first six years.”
- 00:56
Totally just... wrong. Reject.
- 00:59
C. “Every employee is paid approximately
- 01:01
the same amount after having worked at the company for at least six years.”
- 01:06
This one looks correct – after about year 6, this becomes the people’s republic of
- 01:10
socialism, more or less.
- 01:13
D. “A person who has worked at the company
- 01:16
for 15 years can expect to have a yearly salary of about $100,000.”
- 01:20
D is just wrong – like… where on earth did they get this one?
- 01:23
The line flattens at about 80 grand.
- 01:25
The answer is C.
- 01:27
As in… “Catch!”
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