STAT 1000 EXAM 3 QUESTIONS AND 100%
CORRECT ANSWERS!!
what makes probability different from statistics
probability is trying to predict future outcomes, whereas statistics is using data to make a
judgment/satement
a situation in which we know what outcomes can possibly occur, but we don't know which
particular outcome will happen
random phenomenon
examples of random phenomenon
flipping a coin, rolling dice, picking a card from a deck
a single attempt or realization of a random phenomenon
trial
a random phenomenon consists of ? and ?
trials and outcomes
example of a trial
flipping a coin once is 1 trial, flipping a coin 5 times is 5 trials
the potential results of a single trial
outcomes
what are examples of outcomes when flipping a coin
heads or tails
any combination of outcomes, typically denoted by capital letter
events
the collection of all possible outcome values
, sample space
what letter is sample space denoted by
S
list the sample space of rolling a die
S = {1, 2, 3, 4, 5, 6}
consider rolling two dice and recording the sum. what is the sample space?
S = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
consider flipping two coins and recording the number of tails. what is the sample space?
S = {0, 1, 2}
consider flipping two coins and looking at the order of the results. what is the sample
space?
S = {HH, HT, TH, TT}
the chance that an event occurs
probability
what is probability denoted as
P(A)
what does A mean in P(A)
the event
what are the three kinds of probability
theoretical probability, empirical probability, subjective probability
when the probability comes from a mathematical model and not from observation. assigns
the same probability to each possible outcome
theoretical probability
CORRECT ANSWERS!!
what makes probability different from statistics
probability is trying to predict future outcomes, whereas statistics is using data to make a
judgment/satement
a situation in which we know what outcomes can possibly occur, but we don't know which
particular outcome will happen
random phenomenon
examples of random phenomenon
flipping a coin, rolling dice, picking a card from a deck
a single attempt or realization of a random phenomenon
trial
a random phenomenon consists of ? and ?
trials and outcomes
example of a trial
flipping a coin once is 1 trial, flipping a coin 5 times is 5 trials
the potential results of a single trial
outcomes
what are examples of outcomes when flipping a coin
heads or tails
any combination of outcomes, typically denoted by capital letter
events
the collection of all possible outcome values
, sample space
what letter is sample space denoted by
S
list the sample space of rolling a die
S = {1, 2, 3, 4, 5, 6}
consider rolling two dice and recording the sum. what is the sample space?
S = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
consider flipping two coins and recording the number of tails. what is the sample space?
S = {0, 1, 2}
consider flipping two coins and looking at the order of the results. what is the sample
space?
S = {HH, HT, TH, TT}
the chance that an event occurs
probability
what is probability denoted as
P(A)
what does A mean in P(A)
the event
what are the three kinds of probability
theoretical probability, empirical probability, subjective probability
when the probability comes from a mathematical model and not from observation. assigns
the same probability to each possible outcome
theoretical probability
