WorksheetsMath Major 216 Elementary Statistics and Probability
Total questions: 50
Worksheet time: 2hrs 33mins
Which of the following are the properties of a Normal Probability Distribution.
The distribution curve is bell - shaped.
The curve is symmetric about its center, the mean.
The mean, the median, and the mode coincide at the center.
The area under the curve is 1 or 100%
The tails of the curve is asymptotic to the base line.
Supposed two coins are tossed consecutively and we are interested in the number of heads that will come out. Determine the values of the random variable H (number of heads).
0,2,3,4
0,1,2,3
0,1,2
0,1,2,3,4
Two coins are tossed in an experiment. Which of the following list is the sample space?
S= {HH, HT, TH, TT}
S= {HH, TT}
S= { HT, TH, TT}
S= {HH, HT, TT}
It is the set of all possible outcomes in an experiment.
Random Variable
Sample Space
Mean
Data
It is a numerical quantity that is assigned to the outcome of an experiment.
Statistics
Probability
Random Variable
Distribution
What is the ratio of Theoretical Probability?
Possible Outcome/Favorable Outcome
Favorable Actual/# of Trials
# of Trials/Favorable Actual
Favorable Outcome/Possible Outcome
How are Independent and Dependent Probability different?
There is not difference
Independent probability's 2nd event is affected by the first event. Dependent probability's events don't change.
Dependent prob.'s 2nd event is affected by the first event. Independent prob's events don't change.
It depends on the question.
Find the Mode of the following set:
{3,6,9,1,2,5,6,3,7,3}
3
6
3 and 6
4
Find the Median of the following set:
{3,6,9,1,2,5,6,3,7,3}
4.5
6
5
4
Find the Mean of the following set:
{3,6,9,1,2,5,6,3,7,3}
6
4
4.5
3
The average data of a set.
MODE
MEDIAN
MEAN
STANDARD DEVIATION
Which of the corresponding area of the z-scores that corresponds z = 0.65?
0.2422
0.2123
0.2257
0.2088
It is a type of random variable that can be measured.
Discrete Random Variable
Continuous Random Variable
Given the mean μ=20, standard deviation σ=5, find the z-value that corresponds to the scores x=20.
1
-1
0
2
Which of the following is not a property of a normal distribution?
The distribution curve is bell-shaped.
The area under the curve is 1.
The mean, median, and mode coincide at the center.
The curve is asymmetrical about its center.
It is kind of a variable which set of possible outcomes is countable. For instance, number of defective cellphones, number of male athletes, number of siblings in the family.
Sample Space
Continuous Random Variable
Variable
Discrete Random Variable
What is the missing value in the probability distribution as shown in the given table?
3/8
4/8
5/8
6/8
What IQ scores fall within 68% of the distribution?
55-145
85-115
70-130
100-145
Which of the following statement is TRUE about parameter?
It is the measurement or quantity that describes the sample.
It is the measurement or quantity that describes the population.
The teacher randomly selected 5 students to join in the school pictorial illustrates parameter
Which of the following is a discrete probability distribution?
The average amount of electricity consumed
The number of patients in a hospital
The amount of paint used in repainting a building
The average weight of female athletes
If two coins are tossed, which is not a possible value of the random variable for the number of heads?
0
1
2
3
Which of the following is not a true statement?
The value of a random variable could be zero.
Random variables can only have one value.
The probability of the value of a random variable could be zero.
The sum of all the probabilities in a probability distribution is always equal to one.
It is a characteristic that can assume different values.
probability distribution
variable
discrete
nominal
It consist of the values of the random variable can assume and the corresponding probabilities.
Probability
Frequency Distribution
Probability Distribution
Distribution
Variables that are expressed as a whole and is countable.
Discrete
Continuous
Nominal
Ordinal
Which of the following best describes the continuous variable?
Expressed as a whole
Countable
weight
Uncountable
It is the list of all possible outcomes.
probability distribution
disctrete variable
possible outcomes
sample space
It is the most appearing number.
mean
mode
median
variance
Process of collecting, analyzing, interpreting and presenting data.
probability
statistics
variable
none of the above
What is the mean of the following list of numbers?
9, 9, 14, 7, 12, 8, 11, 19, 15, 11
9
10
11.5
12.5
What is the median of the following list of numbers?
9, 9, 14, 7, 12, 8, 11, 19, 15, 11
9
11
10
12
4 yellow, 6 orange, 3 green, 5 blue, 2 brown
What is the probability of selecting a brown candy?
What is the probability you spin something larger than 10
5
3/10
10/15
3/8
What is the probability you spin an odd number and not yellow?
5/18
1/9
1/3
4/9
Barry rolls a number cube. Describe an event that is likely to happen, but not certain.
Rolling a 7
Rolling a 2
Rolling a 2, 3, or a 6
Rolling something larger than 2
You are asked to choose a shirt from 5 different shirts and a pair of pants from two different pairs. How many possible outcomes are there for this compound event.
5
2
10
100
A company makes DVDs and randomly selects 25 from 1500 to test them to see if they work.
Biased
Unbiased
2,2,2,4,4,5,6,6,6,7
20 30 40 50 60
It is the set of all possible outcomes in an experiment.
Random Variable
Sample Space
Mean
Data
