Sampling Distributions and Confidence Intervals for Proportions Key Terms
Central Limit Theorem- The Central Limit Theorem states that the sampling distributions
model of the sample proportions and me
Math 260
Midterm Exam I Review
Applied Sta8s8cs-I
Logis8cs
Scope: Chapters 1-2 of the Lock5 text
Time: 75 minutes
Format: No books or notes, but the you will be allowed to use SPSS, class applets (e.g
Math%260%
Final%Exam%Review%
Applied%Sta8s8cs%I
FORMULAS
Determination2of2Sample2Size2to2Estimate2a2
Proportion
2
z*
n=
p(1
p)
ME
!
Determination2of2Sample2Size2to2Estimate2a2
Mean
z *
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!
Chapter Summaries
681
Chapter 2: Describing Data
In Chapter 2, we learn about methods to display and summarize data. We use
statistical plots to display information and summary statistics to quantify
Probability Key Terms
Law-of Large Numbers the Law of Large Numbers states that the long-run relative
frequency of repeated independent events settles down to the true relative frequency as
the number
Comparing Two Groups Key Terms
Paired data- Data are paired when the observations are collected in pairs or the
observations in one group are naturally related to observations in the other. The
simple
Randomness Key Terms
Addition Rule- If A and B are disjoint events, then the probability of A or B is P(A or B)=
P(A) + P(B).
Complement Rule- the probability of an event occurring is 1 minus the prob
Probability Models Key Terms
Normal model- The most famous continuous probability model, the Normal is used to
model a wide variety of phenomenon whose distributions are unimodal and symmetric.
The No
Random Variables Key Terms
Empirical Rule- In a Normal model, 68% of values fall within one standard deviation of
the mean, 95% fall within two standard deviations of the mean, and 99.7% fall within
t
Inference for Counts: Chi-squared tests Key Terms
Cell- A cell of a two way table is one element of the table corresponding to a specific
row and a specific column. Table cells can hold:
1. Counts
2.
Testing hypotheses about Proportions Key Terms
Alpha level- The threshold P- value that determines when we reject a null hypothesis.
Alternative hypothesis- The hypothesis that proposes what we should
Inference for Regression Key Terms
Confidence interval for the regression slope- When the assumptions are satisfied, we
can find a confidence interval for the slope parameter. The critical value depen
Introduction to Data mining Key Terms
Algorithm- A set of instructions used for calculation and data processing. The algorithm
specifies how the model is built from the data.
Classification problem- A
680
APPENDIX A
Chapter 1: Collecting Data
In Chapter 1, we learn about appropriate ways to collect data. A dataset consists
of values for one or more variables that record or measure information for e