Statistics & Probability MCQs
Statistics & Probability MCQs
These Statistics & Probability multiple-choice questions and their answers will help you strengthen your grip on the subject of Statistics & Probability. You can prepare for an upcoming exam or job interview with these Statistics & Probability MCQs.
So scroll down and start answering.
1: What is the median of: 5, 10, 15?
A. 9.5
B. 15
C. 5
D. 10
2: What is the mean of a standard normal distribution?
A. 0
B. 0.5
C. 100
D. 1
E. 50
3: What is true about these 5 numbers? -2, -1, 0, 5, 10
A. The mean is larger than the median.
B. The median is larger than the mean.
C. Cannot compare means and medians.
D. The median and mean are equal to each other.
4: If a data set follows a normal distribution, approximately ___% of data falls within 1 standard deviation of the mean.
A. 68%
B. 0%
C. 25%
D. 100%
5: The number of cars that went through a car wash during the noon hour over each of the past 8 days are the following: 5, 9, 2, 3, 3, 9, 8, 6 What is the range of this data?
A. 7
B. 9
C. 5.6
D. 8
6: You flip an unbiased coin 2 times - what is the probability of getting 2 heads?
A. 50%
B. Cannot determine
C. 100%
D. 75%
E. 25%
7: Discrete and continuous data are both forms of _______ data.
A. incomplete
B. qualitative
C. quantitative
D. None of these
8: What is the average of the following 5 numbers? 1, 2, 3, 4, 10
A. 1
B. 10
C. 4
D. 3
9: What is the mode of: 5, 10, 10, 15, 17?
A. 12
B. 5
C. 10
D. 11.2
10: What is the value of the middle observation in a ordered set of numbers
A. Median
B. Mode
C. Central Standard
D. Mean
11: The ______ describes the dispersion of a data set.
A. standard deviation
B. median
C. None of these
D. mean
12: Which of the following is quantitative data:
A. A schedule of meetings
B. Test scores for English class
C. A list of song titles
D. A prescription written by a physician
13: A mean calculation is a part of _______ statistics.
A. non-parametric
B. Neither of these
C. parametric
14: Where would the outliers be if a distribution had a skewness of 0?
A. Left
B. No outliers
C. Far right
D. Right
E. Far left
15: You flip an unbiased coin one time - what is the probability of getting tails?
A. 50%
B. 25%
C. Cannot determine
D. 75%
E. 100%
16: The difference between the highest and lowest scores is called the ______.
A. range
B. mean
C. sample
D. mode
17: The Square of the standard deviation is called
A. Covariance
B. Variance
C. Mean
D. Squared Distribution
18: What is the mean of: 5, 10, 15?
A. 11
B. 1
C. 10
D. 5
19: A normal distribution generally takes the form of _______.
A. square ruit
B. bell curve
C. None of these
D. asymptote
20: What is the median of the following 5 numbers? 1, 2, 3, 4, 10
A. 4
B. 3
C. 1
D. 10
21: True or false? Qualitative data is strictly numerical.
A. False
B. True
22: What power is used in the formula for variance?
A. 4
B. 3
C. 5
D. 1
E. 2
23: What is the skewness of a normal distribution?
A. 3
B. 4
C. 2
D. 0
E. 1
24: The average grade on a midterm exam in a math class is 72. The teacher feels this is too low, so they award 10 extra points to every student in the class. What is the new average grade for the class?
A. Not enough information.
B. 62
C. 82
D. 72
25: Two coins are tossed, what is the probability that two heads are obtained?
A. .75
B. .5
C. .25
D. 0
E. .125
26: The, "null hypothesis," refers to
A. That the relationship depends on other factors
B. That there is a minor relationship between two phenomena
C. That there is a significant relationship between two phenomena
D. that there is no relationship between two phenomena
27: Your college professor standardizes everyone's test scores. Your standardized score is -1.35. Which of the following statements is true?
A. You scored within one standard deviation of the average test score.
B. Your test score was above the average.
C. Your test score was below the average.
D. Your test score had the highest standard deviation.
28: The median grade on a midterm exam in a math class is 72. The teacher feels this is too low, so they award 10 extra points to every student in the class. What is the new median grade for the class?
A. 62
B. 82
C. Not enough information.
D. 72
29: Which of the following is a measure of spread?
A. Mean
B. Lower Quartile
C. Median
D. Range
30: Which of the following is NOT a characteristic of a Normal distribution?
A. Defined completely by mean and variance
B. Unimodal
C. Right Skewed
D. Symmetric
31: Let A be a normal distribution with a mean of 3 and B be a normal distribution with a mean of 17. What is the mean of A+B?
A. 14
B. 3
C. 17
D. 20
E. 51
32: A forestry researcher recorded many variables on the trees of a large forest. These variables include the height (in meters), the diameter (in centimeters), the species (pine, oak, etc.), and if the tree had Dutch Elm disease. In this study which variables that were recorded were quantitative?
A. Only species and height.
B. Only height.
C. Only height and diameter.
D. All of the variables.
33: How can you convert a variance to a standard deviation?
A. Variance = standard deviation
B. Take the square root of the variance
C. Take the cubed root of the variance
D. Take the log of the variance
E. Square the variance
34: Using previous games to predict the score of a game is an example of ________ statistics.
A. inferential
B. descriptive
C. incomplete
D. None of these
35: Bob is a high school basketball player, who is a 72% free throw shooter. Bob has missed his first four free throws of the game. What is the probability that Bob makes his fifth free throw?
A. 0%
B. 72%
C. 90%
D. 100%
36: Where would the outliers be if a distribution had a skewness of -50?
A. Far left
B. Left
C. Right
D. Far right
E. No outliers
37: Over the last 360 days of winter in Raleigh, NC (5 winters) we have had snow on 36 days. What is the probability that we will have snow on any random winter day this year?
A. 0.05
B. 0.1
C. 0.01
D. 0.2
38: Which of the following is not a measure of spread?
A. Variance
B. Range
C. Upper Quartile
D. Standard Deviation
39: What is the probability of rolling a fair dice and getting an even number?
A. 1/2
B. 4/6
C. 1/6
D. 1/3
40: You calculate the standard deviation of a data set and find that it is -1.23. From this you can determine which of the following is true?
A. The mean must be negative.
B. You made an arithmetic mistake because standard deviation cannot be negative.
C. Every value in the data set is the same.
D. All of the values in the data set are negative.
41: Where would the outliers be if a distribution had a skewness of +1?
A. Right
B. Left
C. Far right
D. No outliers
E. Far left
42: Suppose E is an event in a sample space S with probability .3. What is the probability of the complement of E?
A. .3
B. .7
C. 1
D. 0
43: What is true about these 5 numbers? -10, -5, 0, 1, 2
A. Cannot compare means and medians.
B. The median and mean are equal to each other.
C. The median is larger than the mean.
D. The mean is larger than the median.
44: How is P(A|B) interpreted?
A. The probability that event A or event B happens
B. The probability event A happens given that event B has happened
C. The probability event A happens given that event B did not happen
D. The probability event B happens given that event A has happened
45: Symbolism: What does the small sigma represent (without any other symbols) in statistics?
A. Mean
B. Skewness
C. Expected Value
D. Standard Deviation
E. Variance
46: _____ are collections of observations.
A. Random variables
B. Data
C. Expected values
D. Populations
47: What is the difference between the mean and the median?
A. Median is not affected by skewness of the distribution
B. Both are always equal
C. Mean is always greater than the Median
D. Mean is not effected by skewness of the distribution
48: Where would the outliers be if a distribution had a skewness of +50?
A. No outliers
B. Right
C. Left
D. Far left
E. Far right
49: A ______ is a numerical characteristic of a population
A. None of these
B. category
C. parameter
D. constraint
50: What is the probability of rolling a fair dice and getting a 1 and flipping a fair coin getting a head?
A. 1/12
B. 1/6
C. 3/12
D. 1/2
List of Statistics & Probabili...
Available in:
Statistics & Probability MCQs
Множественный выбор вопросов по статистике и вероятности (Statistics & Probability MCQs)
Preguntas de opción múltiple de Estadística y Probabilidad (Statistics & Probability MCQs)
統計と確率の多肢選択問題 (Statistics & Probability MCQs)
Domande a risposta multipla di Statistica e Probabilità (Statistics & Probability MCQs)
Questions à choix multiples sur les statistiques et la probabilité (Statistics & Probability MCQs)
Questões de Múltipla Escolha de Estatística e Probabilidade (Statistics & Probability MCQs)
Multiple-Choice-Fragen zu Statistik und Wahrscheinlichkeit (Statistics & Probability MCQs)
统计与概率多项选择题 (Statistics & Probability MCQs)
أسئلة اختيارية متعددة في الإحصاء والاحتمالات (Statistics & Probability MCQs)
Soal Pilihan Ganda Statistik & Probabilitas
İstatistik ve Olasılık Çoktan Seçmeli Soruları
