Why Statistics? - collingwoodresearch
... PopulationThe entire group of things about which we want information. An estimate that describes an aspect of the population is a parameter. A parameter is a number that describes the population – in theory it is fixed, but rarely do we know it. An example: The US Census. ...
... PopulationThe entire group of things about which we want information. An estimate that describes an aspect of the population is a parameter. A parameter is a number that describes the population – in theory it is fixed, but rarely do we know it. An example: The US Census. ...
and Probability
... A polling organization has a list of 1,000 people for a telephone survey. The pollsters know that 433 people out of the 1,000 are members of the Democratic Party. Assuming that a person cannot be called more than once, what is the probability that the first two people called will be members of the ...
... A polling organization has a list of 1,000 people for a telephone survey. The pollsters know that 433 people out of the 1,000 are members of the Democratic Party. Assuming that a person cannot be called more than once, what is the probability that the first two people called will be members of the ...
M01 Notes
... Pick a card, any card! Probability of drawing a jack given that you've drawn a face card? P(jack|face) = P(jackface)/P(face) = P(jack)/P(face) = (4/52)/(12/52) = 1/3 P(jack|face) = P(face|jack)P(jack)/P(face) = 1*(4/52)/(12/52) = 1/3 Probability of drawing a face card given that you've drawn a jack ...
... Pick a card, any card! Probability of drawing a jack given that you've drawn a face card? P(jack|face) = P(jackface)/P(face) = P(jack)/P(face) = (4/52)/(12/52) = 1/3 P(jack|face) = P(face|jack)P(jack)/P(face) = 1*(4/52)/(12/52) = 1/3 Probability of drawing a face card given that you've drawn a jack ...
Name: John Toney Date: 1-12
... 2.6.8.B: Organize and display one-variable data using appropriate data display, such as stem-and-leaf and box-and-whisker plots, and two variable data with scatterplots. 2.6.11.A: Design and conduct an experiment using random sampling. 2.6.11.C: Select or calculate the appropriate measure of c ...
... 2.6.8.B: Organize and display one-variable data using appropriate data display, such as stem-and-leaf and box-and-whisker plots, and two variable data with scatterplots. 2.6.11.A: Design and conduct an experiment using random sampling. 2.6.11.C: Select or calculate the appropriate measure of c ...
Chapter 7 – The Normal Probability Distribution
... 1) For any event A, 0 P(A) 1. 2) P(S) = 1. In other words, the outcome of the random experiment is certain to be in the sample space. 3) If two events A and B are mutually exclusive, then P( A B) P( A) P( B) . Addition Rule for Non-Mutually Exclusive Events Conditional Probability Independ ...
... 1) For any event A, 0 P(A) 1. 2) P(S) = 1. In other words, the outcome of the random experiment is certain to be in the sample space. 3) If two events A and B are mutually exclusive, then P( A B) P( A) P( B) . Addition Rule for Non-Mutually Exclusive Events Conditional Probability Independ ...
P - Yogesh Uppal
... When economic conditions and a company’s circumstances change rapidly it might be inappropriate to assign probabilities based solely on historical data. We can use any data available as well as our experience and intuition, but ultimately a probability value should express our degree of belief t ...
... When economic conditions and a company’s circumstances change rapidly it might be inappropriate to assign probabilities based solely on historical data. We can use any data available as well as our experience and intuition, but ultimately a probability value should express our degree of belief t ...
Economics 103 – Statistics for Economists
... The Inverse Gambler’s Fallacy This is true: Albert is more likely to get four sixes if he rolls many times than if he rolls only once. ...
... The Inverse Gambler’s Fallacy This is true: Albert is more likely to get four sixes if he rolls many times than if he rolls only once. ...
(A – (A B)) - OLC Warehouse
... if U ⊆ V then P(V – U) = P(V) – P(U). Use this result and the result of part (a) to finish the proof of the formula. ...
... if U ⊆ V then P(V – U) = P(V) – P(U). Use this result and the result of part (a) to finish the proof of the formula. ...
Quarter 3
... relationships in a network. N-VM.C.07 (+) Multiply matrices by scalars to produce new matrices, e.g., as when all of the payoffs in a game are doubled. N-VM.C.08 (+) Add, subtract, and multiply matrices of appropriate dimensions. N-VM.C.09 (+) Understand that, unlike multiplication of numbers, matri ...
... relationships in a network. N-VM.C.07 (+) Multiply matrices by scalars to produce new matrices, e.g., as when all of the payoffs in a game are doubled. N-VM.C.08 (+) Add, subtract, and multiply matrices of appropriate dimensions. N-VM.C.09 (+) Understand that, unlike multiplication of numbers, matri ...
CH4. Introduction to Probability
... * In order to check the independence of two variables, we need to check the independence conditions of all the events between two variables. Ex 3) to illustrate system reliability, suppose a Web site has 2 independent file servers. Each server has 99% reliability. ...
... * In order to check the independence of two variables, we need to check the independence conditions of all the events between two variables. Ex 3) to illustrate system reliability, suppose a Web site has 2 independent file servers. Each server has 99% reliability. ...
about conditional probability
... we have to realise that we are not interested in this value, but in the probability that the suspect is innocent given the positive test result, which is completely different. [Regrettably, the House of Lords has ruled that juries are unable to understand this difference, and it must not be explaine ...
... we have to realise that we are not interested in this value, but in the probability that the suspect is innocent given the positive test result, which is completely different. [Regrettably, the House of Lords has ruled that juries are unable to understand this difference, and it must not be explaine ...
Probability - Schenectady City School District
... List the sample space for one 6-sided die. Make a tally chart with the possible outcomes. With your partner, roll the die 60 times and tally the results. Compare the results to the possibilities in the sample space. Create a tree diagram that lists the sample space for rolling two 6-sided dice. With ...
... List the sample space for one 6-sided die. Make a tally chart with the possible outcomes. With your partner, roll the die 60 times and tally the results. Compare the results to the possibilities in the sample space. Create a tree diagram that lists the sample space for rolling two 6-sided dice. With ...
Lecture 21
... that consist of a number of independent, identical, trials which have only two possible outcomes. • For example, success and failure, where the probability of success, p(success) = 1 − p(f ailure) and vice versa. Example: ...
... that consist of a number of independent, identical, trials which have only two possible outcomes. • For example, success and failure, where the probability of success, p(success) = 1 − p(f ailure) and vice versa. Example: ...
Statistics - Personal Webpages (The University of Manchester)
... – For a set of alternative events, total of all probabilities is 1 – Events assumed to be independent • This can be counter-intuitive, but (in coin toss) the chance of heads is always 1/2, whatever the preceding tosses were ...
... – For a set of alternative events, total of all probabilities is 1 – Events assumed to be independent • This can be counter-intuitive, but (in coin toss) the chance of heads is always 1/2, whatever the preceding tosses were ...
Final Exam Review
... 9. a) You deposit $12,000 in a saving account at an APR of 2% compounded monthly. How much money will you have after 7 years? b) You deposit $12,000 in a saving account at an APR of 2% compounded quarterly. How much money will you have after 7 years? c) How much money must you deposit today to have ...
... 9. a) You deposit $12,000 in a saving account at an APR of 2% compounded monthly. How much money will you have after 7 years? b) You deposit $12,000 in a saving account at an APR of 2% compounded quarterly. How much money will you have after 7 years? c) How much money must you deposit today to have ...