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MDM4U Exam Review
MDM4U Exam Review
18 terms
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StudBud Administration
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Math, Review, Probability, Statistics
Flashcards
18 cards
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Questions
18
Answers
1
Which correlation coefficient shows the strongest correlation
-0.98
0.01
-0.52
0.89
2
If the 75th percentile is a score of 9 then..
any score above 13 is an outlier
there are maximum score is 12
the 9th score is in the 75th percentile
75% of the scores are 9 or below
3
In order to use the normal approximation for a binomial distribution you need...
A large probability, p
A small probability, p
A small number of trials, n
A large number of trials, n
4
Which value is most likely to be an outlier? 1,4,5,11,2,3,35
35
1
the mean
the median
5
Correlation implies all of the following
EXCEPT
a trend in the data
a non-zero r value
a linear relationship
a causal relationship
6
The uniform distribution differs from the others we studied by...
Involving Bernoulli Trials
Being represented by a histogram
Not requiring repeated trials
Only having two possible outcomes
7
You have an apple, pear, plum, and banana. How many different pairs of fruit can you make?
2_C_4
4_P_2
2_P_4
4_C_2
8
Why is this graph misleading?
Unequal increments
Not starting at zero
Only showing male life expectancy
Separating the bars
9
How many different sums of money can you make from a nickel, a dime, a quarter, and a dollar?
6
15
10
31
10
If P(A) = 0.25, then
P(A') = 4
P(A') = -0.25
P(A') = 0.25
P(A') = 0.75
11
How many different 4-digit numbers are possible. IF you can only use the digits 1 to 9
9999
6561
10000
9900
12
Q3 for the box and whisker plot pictured is...
27
24
17
21
13
How many different ways are there to rearrange the letters of the word PROBLEM?
7_C_7
49
7
7_P_7
14
Surveying all the students at randomly chosen schools to study student opinions everywhere is
Cluster Random Sampling
Systematic Random Sampling
Stratified Random Sampling
Simple Random Sampling
15
Which portion of the data in the box and whisker plot is grouped the tightest?
the bottom 25%
the box
the IQR
the top 25%
16
For a continuous uniform distribution the probability the probability density function, f(x)...
Has a graph that looks like a bell
Increases as x increases
Represents the probability of x for all points
Is equal at all points
17
The correlation in the scatter plot shown is...
weak, positive
strong, positive
strong, negative
weak, negative
18
If I calculate the probability of an event to be 1.4 then...
It will certainly happen
It is unlikely to happen
I made a mistake
The probability is 0.20
