Chapter 1
* In statistics the group we wish to study is called the population * A sample is a subset of the population which is used to gain insight about the population. Samples are used to represent a larger group, the population. * • Descriptive statistics – the collection, organization, analysis, and presentation of data. * Inferential statistics – uses descriptive statistics to estimate population parameters; an educated guess about the population based on sample data. Chapter 2

* • During the experiment a treatment is applied to the experimental group. * • The exact treatment will depend on the particular experiment. * • The treatment changes the level of the explanatory variable in the experiment. The effect of the treatment can be measured by comparing the response variable in the control and experimental groups. * Qualitative: Descriptions and Labels

* Quantitative: counts and measurements
* Discrete: Usually counts of things, restricted set of values * Continuous: Usually measurements, data can take on any value in an interval * Nominal measures offer names or labels for certain characteristics * Ordinal data represents data in an associated order.

* If the data can be ordered and the arithmetic difference is meaningful, the data is interval. * Ratio data has a meaningful zero point and the ratio of two data points is meaningful. * Quantitative data is measured on the interval or ratio scale. * Qualitative data is measured on a nominal or ordinal scale Chapter 3

* A frequency distribution is a summary technique that organizes data into classes and provides in tabular form a list of the classes along with the number of observations in each class *
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* The cumulative relative frequency is the proportion of observations in a particular class and all preceding classes. Below is a cumulative relative frequency distribution for the heart rate data. *...

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INTRODUCTION TO NORMAL DISTRIBUTIONS
The normal distribution is the most important and most widely used distribution in statistics. It is sometimes called the "bell curve," although the tonal qualities of such a bell would be less than pleasing. It is also called the "Gaussian curve" after the mathematician Karl Friedrich Gauss. As you will see in the section on the history of the normal distribution, although Gauss played an important role in its history, Abraham de Moivre first...

...made for you to take the exam at the ARC.
Consists of multiple-choice, true-false, short answer and short essay questions. There are no computational problems on Part One.
Closed book, closed notes.
Use of a cellphone, computer or other electronic device is not permitted. Please turn your cellphone completely OFF (including vibrate) for the duration of the entire exam.
Bring at least two #2 pencils. I will bring paper.
You may not wear a baseball cap...

...Exam 3 StudyGuide Math 219
1. The probability that a randomly selected patient who visits the emergency room will die within 1 year of the visit is 0.05. (binomial probability distribution)
a) What is the probability that exactly 1 of 10 randomly selected visitors to the ER will die within 1 year?
b) What is the probability that fewer than 2 of 25 randomly selected visitors to the ER will die within 1 year?
c) What is the...

...9943=.0057=pvalue e.Relationship between sample size and pvalue? As sample size increases,pvalue decreses. Inverse relationship.
A medical statistician wants to estimate the average weight loss of people who are on a new diet plan. In a preliminary study, he guesses that the standard deviation of the population of weight losses is about 10 pounds. How large a sample should he take to estimate the mean weight loss to within 2 pounds with 90% confidence? 1.645(90%)*10/√n=2...

...OM335 Final examstudyguide
1. (6 points) Daily demand for the ice creams at I-Scream parlor is normally distributed with a mean of 160 quarts and a standard deviation of 100 quarts. The owner has the ice cream supplied by a wholesaler who charges $2.20 per quart. The ice cream sells for $4 per quart. The wholesaler charges a $400 delivery charge independent of order size. It takes 4 days for an order to be supplied. The opportunity cost of...

...loss from evaporation= dry them up and remove the wet linen.
3. Child with cephalohematoma. What condition is associated with cephalohemetoma = jaundice
4. Why do we perform gestational age in a baby= to identify developmental level
5. What kind of exam do we perform to access for gestational age = ballot score
6. A baby has been circumcised a mother called the unit and complains that she saw a yellow crust on the penile area what do you tell the mother=Normal
7. You are...

...Results may be applied to the populations studied
j. Results may apply only to the sample studied
k. Sampling error is high
l. Sample does not represent the population
4. The group from which you actually collect data for your study is known as the __________.
m. sample
n. population
o. sampling error
p. general group
5. Which of the following provides you with a measure of how well your sample approximates the population?...