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Statistics Midterm Review
Statistics Midterm Review
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Midterm review for Statistics
Flashcards
38 cards
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Practice quiz
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Questions
38
Answers
1
A pop. has a mean of 26 and st. dev. of 4. What number has a Z-score of -1.4
-5.6
-6.8
20.4
-31.6
2
Take 1 course from each of the following: 5 math, 4 science, and 3 English. How many ways?
23
60
40
12
3
What is the mode of 11, 12, 11, 14, 10, 14
14
no mode
11
11, 14
4
Currently, Mrs. Aceta has this many YouTube subscribers...
77
97
87
107
5
What is the probability of choosing a black card or a heart card in a standard deck of cards?
1/52
13/52
39/52
26/52
6
A study conducted on hours spent doing HW and test scores...
Test is dependent, HW is independent
Test is independent, HW is dependent
7
Who would you want to be your partner on a STATS Midterm test?
Skye
Eli
Colby
Gunnar
8
What is the probability of drawing two Kings WITHOUT replacing the first?
(4/52)(3/51)
(1/52)(1/51)
(4/52)(4/51)
2/52
9
Which of the following curse words Judah has NOT said...
H---
Sh--
F---
D---
10
If Q1 = 132, Q2 = 254 and Q3 = 324, Find IQR
96
192
122
70
11
Estimate the unemployment rate in May '09
9.6%
9%
9.5%
9.4%
12
Things we talk about in Stats that are not Stats...
Bad effing Brad
Shrooms
Legal use of Marijuana
Tattoos
13
Is this a Probability Distribution?
Yes the probabilities add to 1
No the probabilities do not add to 1
14
49.5% of N.C. people are against the legalization of marijuana. What percent is for it?
49
49.5
50
50.5
15
If a student scored an 80 on a test with st. dev. of 4.2 and mean of 86.4. What's the Z-score?
2.36
-1.52
6.4
-1.42
16
Which of the following data are continuous?
The number of species of trees
Number of representatives in the House
the average height of a basketball player
the rankings of winners in a race
17
The _____ graph is most appropriate to show the avg of SAT scores at MCA over the last 10 years
bar
pareto
pie chart
time-series
18
The probability that a person take Statisitcs is 46%. What is the MEAN if 10 people are asked?
.54
.46
10
4.6
19
Inferential Statistics uses probability
True
False
20
Questioning every 5th person as they leave a class is called...
sample of convenience
stratified sampling
systematic sampling
cluster sampling
21
The probability that a person take Statisitcs is 46%. What is the STANDARD DEVIATION if 10 people are asked?
2.14
4.6
2.48
1.58
22
What is the probability of choosing a diamond and an 2?
4/52
16/52
17/52
13/52
23
Graph
D
A
C
B
24
Describe the skew of this graph
bimodal
left skewed
right skewed
symmetric
25
How many ways can you choose 12 actors for a play from a group of 20
125,970
6,000,000,000
20!
479,001,600
26
Which is correct to find the MEAN of this probability distribution?
0(.18)+1(.34)+2(.35)+3(.11)+4(.02)
Take the square root of above
02(.18)+12(.34)+22(.35)+32(.11)+42(.02)
Take the square root of above
27
What is the probability of picking an ace from a deck of cards?
1/2
4/52
1/4
2/52
28
When asked Judah "Who would you want to babysit you?" he chose...
Mia R
Davis L
Morgan B
Gavin F
29
Sam Washam...
Can cheerlead better than most
Can twerk better than most
Amazing football player
Mia's grade would drop 10 points without him
30
"My favorite teacher is 1st Aceta, 2nd Laurents, and 3rd Ashlock" is an example of:
interval
ratio
nominal
ordinal
31
The class with the highest temperature is...
80-90
75-80
80-85
70-80
32
The boundaries for 23.4
23.35-24.45
22.0-24.0
23.35-23.40
23.49-23.50
33
The mass of a chemical is QUALITATIVE data
True
False
34
Which student started this year off first in PreCalc??
Addy
Tiffani
Layton
Davis
35
A _____________consists of all subjects being studied
group
population
variable
sample
36
If K'Donnie's chance of calling Gunnar at school is 23%, what is the chance he will call Gunnar the next 3 days
.23+.23+.23
.77+.77+.77
(.77)3
(.23)3
37
On Friday I will....
What? We're having a midterm??
Slay my Midterm
Skip the Midterm
Pass the Midterm
38
This triggers Mrs. Aceta...
People who CHEAT on Stats HW
Joe Biden
People who don't do Stats HW
People who CHEAT AND DON'T DO Stats HW named Joe Biden
