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Stats Quiz #1 Flashcards | StudBud
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Stats Quiz #1
Stats Quiz #1
25 terms
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1
A mean is...
YOU!!!! *punches you*
Opposite of nice
Wow this cat looks avera- *is beaten up*
The sum of a sample or population added up, then divided by the # of #s
2
Is this a stem-and-leaf plot?
True
False
3
When talking about the mean of a *population*, you use...
x, N, and M (pronounced 'mew')
omg kitty!! ᓚᘏᗢ
ヾ(≧▽≦*)o, (^///^), and (*/ω＼*)
x, n, and x̄
4
In bell curves, 1σ away from the mean would be...
68% of the data
50% of the data
Answer 4
36% of the data
5
What is the z-score if the mean = 23, the σ = 2, and x = 24?
0.5
1
3
0.15
6
The die inside a magic 8 ball is a...
d10
d12
d2
d20
7
What's the difference between cluster and stratified sampling?
Cluster sampling is when you use the entire world as your sample
Stratified sampling is only used for water columns
Stratified sampling has subgroups, cluster sampling is arbitrary
Cluster sampling is a pokemon I think?
8
Nominal measurement...
Has no order or ranking. Ex: What's your favorite type of fruit?
Isn't it latin?
It's gotta be related to phenominal somehow
RIGID order, has a natural zero
9
Okay, for real now. If you wanted to input 3.89 into a stem & leaf plot, would it look like this?
False
True
10
The probability of the sun exploding as you take this quiz is..
1
0
0.5
Not quite 0
11
Populations, censuses, and parameters are all...
DEF *NOT* USED FOR POPULATIONS!!!! 10000000%!!!
Used for larger groups
Idk... I better go check out Ava's vocab quizlet in #homework-stuff
Used for smaller groups, like samples
12
Stats is
100% facts no lie
Tricking people with numbers
Math
13
To find the range you...
why the y values of course!
high value - low value
square the σ
x=\left(-\left(b\right)\pm\sqrt{b^2-4ac}\right)\div2a
14
To find a class midpoint you...
What are you, a capitalist?
Uhmmm seize the means of production
Add the lower class limit and the upper class limit, then divide by 2
Find the most middlest student in class
15
Ordinal measurement...
Can be in an order, but the diff. in the values is meaningless
No order, values are meaningless
The differences in the values are meaningful
Has an order and a natural zero
16
Surprise log!!! Solve \log_416=x
x=0.5
Charlie... this is evil
x=2
x=4
17
Samples, surveys, and statistics are all..
Used for the middlest groups
Used for larger groups
Used for smaller groups
Used for populations
18
The difference between discrete and continuous data is...
Discrete data is finite and countable, continuous is infinite
Continuous data is.. uhm... might need to see Ava's vocab quizlet again....
Discrete data is much better at keeping secrets
This is all so confusing
19
The formula for σ is...
σ=\left(\sqrt{Σ\left(x-Μ\right)^2}\right)\div N
I just use my calculator? Why tf would I waste my time doing *that* mess
a^{-3}=\frac{1}{a^3}
a^2+b^2=c^2
20
When someone says 'average' instead of 'mean' you...
DON'T EVER SAY AVERAGE. I BEAT 'EM UP!!!
Report them to Wendy so she can beat them up
BEAT 'EM UP!!!!!
There is no truly correct answer. To each their own.
21
Systematic sampling is where...
Pick the easiest elements
Are just all the images unrelated to the questions??
You systematically eat all the samples at Costo
You count every kth element
22
What's a z-score?
The quality of sleep you get every night
The # of σ a data point is above or below the mean
A thing I can easily find by using my calculator
A score of how well you know your ABCs
23
The range rule of thumb is...
Μ\pm2σ
How far your thumb can reach
What rangers use to fire a bow only using their thumbs
The y values of your thumb
24
In a pareto chart, the bars
Stay far enough away to be close, but not touching
Wtf is a parento chat
Stay six feet apart, they need their space
Get all cuddly
25
Does it bother anyone else that Wendy shortens σ/s to std deviation?
True
False
