FREE AND STUDY GAMES ABOUT STATS EXAM

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FREE AND STUDY GAMES ABOUT STATS EXAM

QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -47 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: ___ : denotes the probability of event A and must always be between 0 and 1

Answer:

P(A) Question 2: ___: as a probability experiment is repeated, the proportion of times that a given outcome occurs will approach its probability

Answer:

law of large numbers Question 3: __ : P(A)P(B|A) or P(B)P(A|B)

Answer:

P (A and B)

Question 4: ___ equals the 25th percentile

Answer:

Q1

Question 5: T or F: IN a frequency distribution, the sum of all frequencies is less than the total number of observations

Answer:

FALSe Question 6: ___ : A probability that is computed with the knowledge of additional information.

Answer:

conditional probability Question 7: a # that is not affected much by extreme values, such as the median, is ___

Answer:

resistant

Question 8: If events A and B are independent, then P (A and

• =

Answer:

P(A)P(B)

Question 9: How do you compute SD when given probability and number of participant n the study

Answer:

square root of np(1-p).

Question 10: What is the formula to compute z score?

Answer:

(x-mean) / (standard deviation) Question 11: In a data set, the number of items that are in a particular category is called the ___

Answer:

frequency Question 12: When the histogram is skewed to the LEFT, the mean is ___ than the median

Answer:

less

Question 13: ___ : an event whose probability is small. The cutoff is usually 0.05

Answer:

unusual event Question 14: A ___ sample is one in which the population is divided into groups and a random sample is drawn from each group

Answer:

stratified Question 15: T or F: A voluntary response is always a reliable way to sample

Answer:

False Question 16: When the histogram is skewed to the RIGHT, the mean is __ than the median

Answer:

greater

Question 17: ___ equals the 75th percentile

Answer:

Q3 Question 18: The entire collection of individuals about which information is being sought is called a _____

Answer:

population Question 19: ___ : an outcome or collection of outcomes from a sample space

Answer:

event

Question 20: ___ = P(A) + P(B) - P(A and B)

Answer:

P (A or B)

Question 21: The ___ frequency of a class is the sum of the frequencies of that class and all previous classes

Answer:

cumulative Question 22: ___ : the event that A does not occur

Answer:

complement of A Question 23: IN a data set, the proportion of items that are in a particular category is called the ___ frequency

Answer:

relative Question 24: __ : The occurrence of one event does not affect the probability that the other event occurs.

Answer:

independent Question 25: A ____ sample is one in which the population is divided into groups and a random sample of groups is drawn.

Answer:

cluster Question 26: ___ : Means that P (A and

B) = 0

Answer:

mutually exclusive

Question 27: ___ is the difference between Q3 and Q1 (Q3 - Q1)

Answer:

IQR