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Statistics and Probability
Statistics and Probability
20 terms
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StudBud Administration
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A quiz to introduce the basic concepts of Statistics and Probability.
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
Find the median: 12, 10, 15, 11, 18
15
18
12
12.5
2
Find the mode: 10, 8, 8, 10, 15, 15, 8
15
8
none
10
3
Find the range: 50, 65, 90, 40, 75
50
35
25
40
4
Two coins are tossed, find the probability that two heads are obtained.
1/4
1
1/2
3/4
5
What is the CLASS SIZE in the given frequency distribution table?
10
5
7
4
6
The stem and leaf plot shows that the highest test score in Math is:
86
90
94
58
7
How many outcomes are there when a coin is tossed and a die is rolled?
12
36
6
8
8
Find the mean: 20, 10, 30, 15, 25
25
30
15
20
9
Level of measurement used when students are classified by NATIONALITY.
interval
nominal
ordinal
ratio
10
Number of new teachers in the college for term2 is an example of:
Continuous variable
Discrete variable
11
From the frequency distribution table, how many students received at least 30 marks?
17
20
12
80
12
Level of measurement that presumes that one classification is ranked higher than another
ordinal
ratio
nominal
interval
13
Which of the following is NOT a possible value of a probability?
0.65
0.20
-0.90
0.40
14
In a data set, the mode will always be unique.
TRUE
FALSE
15
A card is drawn from a deck of cards. Find the probability of getting the 3 of diamond.
1/52
1/3
1/13
1/4
16
Which of the following does not constitute a population?
weekly salaries of all employees in a company
age of all members of the family
gender of 50% selected from a large city
scores of all students in a Statistics class
17
The data distribution shown is:
cannot be determined
normal/symmetrical
skewed to the right
skewed to the left
18
From the frequency distribution table, how many students received at most 17 marks?
29
23
100
6
19
Every 5th customer entering the library is asked to select his or her favourite book.
Random sampling
stratified sampling
systematic sampling
cluster sampling
20
The boxplot shows that the median value is:
50
40
25
45
