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Chapter 4 Vocab
Chapter 5 Vocab
4.1/4.2 Problems
5.1/5.2 Problems
5.3/5.4/5.5 Problems
100

The variable whose value can be explained by the value of the explanatory or predictor variable.

What is the Response Variable?

100

The probability of the event occurring is low, less than 5%.

What is an Unusual Event?

100

Compute the correlation coefficient and determine whether there is a linear relation between x and y.

X: 2,4,6,6,7

Y:4,8,10,13,20

r = 0.896

linear relation

100

Which of the following numbers could NOT be an event probability?

1/2,1/5,1.5,0.3,-0.5

What is 1.5,-0.5?
100

The word AND in probability implies that we will use ....

What is the Multiplication rule?

200

A measure of the strength and direction of the linear relationship between two quantitative variables.

What is Correlation Coefficient?

200

The occurrence of one event does not affect the probability of another event.

What are Independent Events?

DAILY DOUBLE: Is this relevant for multiplying or adding probabilties?

200

Which variable is the explanatory variable? The response variable?

Credit Score: 545,595,640,675,705,750

Interest Rate (%):18.982,17.967,12.218,8.612,6.680,5.150

What is Credit Score explanatory, Interest Rate response?
200

If the sample space consists of 

S = {1,2,3,4,5,6,7,8,9,10}

Compute the probability of Event E, "an even number less than 9"

What is 0.4?
200

About 13% of the population is left handed. If two people are randomly selected, what is the probability that at least one is right handed?

What is 0.0169

300

Variable being manipulated in an experiment in order to observe the effect on a dependent variable.

What is the Explanatory/Independent Variable?

300

Events have no outcomes in common.

What is Disjoint?

300
What is the Correlation Coefficient value for the preceding data set?

Credit Score: 545,595,640,675,705,750

Interest Rate (%): 18.892,17.867,12.218,8.612,6.680,5.150

What is r = -0.976?

300

IF E and F ARE disjoint events, then P(E or F)=?

What is P(E or F) = P(E) + P(F)?

300

P (E and F) = 0.6

P (E) = 0.8

Find P (F|E)?

What is 0.75?

400

A variable not included in our analysis that has an impact on one or both variables we are observing.

What is a lurking variable?

400

A technique used to recreate a random event.

What is a simulation?

400

Find the least squares regression line of the following data, treating commute time as the explanatory variable and the index score as the response variable.

Commute:5,15,25,35,50,72,105

Index Score:69.2,68.3,67.5,67.1,66.4,66.1,63.9

What is y=-0.0479x+69.0296?

400

P (F) = 0.30

P (E or F) = 0.65

P (E and F) =0.15

Find P (E)

What is P (E) = 0.50?

400

Find the value of the following Combinations

8c3

52c1

48c3

What is 56,52,17296?

500

The line that minimizes the sum of the squared errors.

What is the Ordinary Least Squares (OLS) Regression Line?

500

Tell me the difference between the classical and empirical approach to probability. i.e. Which one uses experiments

What is the classical approach simply utilizes the numbers, for example on a six sided die the chance of getting any number 1-6 is 1 out of 6. The empirical approach would actually role that die and compute probabilities based on the trials.
500

Using the previous data and regression line of y=-0.0479x+69.0296 predict the index score for a commute of 30 minutes.

What is 67.6?

500

Are there any unusual events in this data?

Two married parents, first marriage = 0.46

Two married parents, one/both remarried = 0.15

Single Parent = 0.26

Cohabiting Parents = .08

No parent at home =.05

What is yes, no parent at home is an unusual event?

500

Dan is creating a spotify playlist with 16 songs, how many ways can he order those 16 songs?

What is 16! ?