Exam 1, MATH 2625, Practice.
Name _
1. The pulse rates (per minute) for 6 patients visited a doctor this morning were recorded as the following: 67 77 88 75 72 76. Find the sample mean and the sample standard deviation of this sample of pulse rates. Sampl
Chi-square Test for Independence
Is there a relationship between Treatment and Heart Disease?
Statistical Correlation Between Categorical Variables
Heart Disease: Have the disease or Do not have the disease. Treatment: Placebo or Aspirin. Heart Disease Tr
Correlation and Regression
Linear Relation Examine Relation Between Two Quantitative Variables
If the cost to get to the drug store is $3.00, and each bottle of drug is $2.00, then y=3+2x
3
x
1 2
Year NGR(xi) Nkill(yi) 77 447 13 78 460 21 79 481 24 80 498
Introduction to Hypothesis Testing
Introduction to Hypothesis Testing
Is the average body temperature of healthy adults 98.6F?
HT - 1
HT - 2
Scientific Method
1. 2. State research hypotheses or questions. Gather data or evidence (observational or experime
Confidence Interval Estimation
Disadvantage of Point Estimation
Introduction to Estimation
Confidence Intervals & Sample Size
1. Provides Single Value Based on Observations from 1 Sample. * Sample MeanX = 98 Is a Point Estimate of Unknown Population Mean.
Normal Distributions
Density Curve
Percent
Modeling Continuous Distribution
Density function, f (x)
A smooth curve that fit the distribution Relative frequency
Normal Distribution
1
2
Density Curve
Percent
Normal Distribution
1. `Bell-Shaped' & Symmetrica
Discrete Probability Distributions and Expectation
What is the probability distribution of rolling a die?
Discrete Probability Distributions
Probability Distributions Mean and Expectation Binomial Distribution
If outcomes are equally likely to xi 1 occur
Probability and Counting
Probability and Counting Rules
A researcher claims that 10% of a large population have disease H. A random sample of 100 people is taken from this population and examined. If 20 people in this random sample have the disease, what
Data Description
Example: Birth weights (in lb) of 5
babies born from two groups of women
under different care programs.
Data Description
Describe Distribution with Numbers
Group 1:
Group 2:
7, 6, 8, 7, 7
3, 4, 8, 9, 11
Chapter 3 - 1
Chapter 3 - 2
Measure
Chapter 2 Frequency Distributions and Graphs
Descriptive Statistics
Frequency Distribution & Graphs
Grouping tables and graphical summary. Numerical Summary.
Descriptive Statistics
Exploratory Data Analysis
Chapter 2 - 1
Chapter 2 - 2
What type of statist
Introduction
Topics in Mathematics
Statistics
Financial Mathematics
Operation Research
Game Theory
Probability
Statistics
Logic
Biostatistics
Engineering Statistics
Social Statistics
Chapter 1 - 1
Chapter 1 - 2
Decision
What is Statistics?
Lies and nothi
SPSS for Exploratory Data Analysis
Data used in this guide: studentp.sav (http:/people.ysu.edu/~gchang/stat/studentp.sav)
Organize and Display One Quantitative Variable (Descriptive Statistics, Boxplot & Histogram)
1. Move the mouse pointer to Analyze, cl