Problem
Problem:Themeanofcfw_4,2,19,13,17,5x15is7.Whatisx?
8
Problem:Themeanofasetof10numbersis67.Ifthevalues99and67are
removedfromtheset,whatisthenewmean?
Hint:Findthetotalofthe10originalnumbers.
63
Problem:Themedianofcfw_52,10,3,6,25,6xis14.Whatisx?
3
P
BUS 216
EXCEL Assignment Name
The attached document contains the selling prices of homes (in thousands of dollars) analyzed by the
number of bedrooms (2, 3, 4, 5, 6) in the home. Answer the following questions.
1. _two bedroom homes sold for less than $19
,
BUS 216
'",
Linear Regression and Correlation
1. _ is the study of the relationship between two variables.
2. A correlation coefficient will give information on the _ _ _ _ _ _ _ _ and
_ _ _ _ _ _ of association between variables.
3. A chart that
BUS 216
Chapter 1 What is Statistics?
Objectives: You should be able to:
1. Define what is meant by statistics.
2. Distinguish descriptive statistics and inferential statistics.
3. Distinguish between a sample and a population.
4. Distinguish between a qu
Chapter 2
Describing Data
Frequency Distributions and Histograms
Objectives: You should be able to
1.
Define the term frequency distribution.
2.
Produce and interpret a frequency distribution for a data set.
3.
Determine the number of classes for a freque
Chapter 3
Weighted Mean
Measures of Dispersion
1.
The weighted mean is a special case of the arithmetic mean, it occurs only when there are
_ observations of the same _.
2.
The formula for the weighted mean is:
Problem 13, page 66
3.
The three shapes of d
Chapter 4
Describing Data
Quartiles, Deciles, and Percentiles
1.
_ divide a set of data into four equal parts.
2.
The middle value of a set of data arranged from smallest to largest is called the
_.
3.
_% of the values lie below Q1 and _% lie above Q1.
4.
BUS 216
Chapter 5
Probability
Objectives: You should be able to:
1.
Define the terms probability, experiment, outcome and event.
2.
List and define the different types of probability.
3.
Define the terms mutually exclusive and collectively exhaustive.
4.
PROBABILITY CONCEPTS
i.
2.
3.
4.
5.
6.
A card is drawn at random from a standard deck of 52 cards. What is the probability that it is a dUf
If a card is drawn at random from a standard deck of 52 cards, what is the probability it is a face car
Principles of Counting
1. In math, the symbol ! means _.
2. 3! = _
3. 10! = _
4. If there are m ways of doing one thing and n ways of doing another thing, there are m x n ways
of doing both according to the _ formula.
5. If order is important and r object
One Variable Summary
Mean
Variance
Std. Dev.
Skewness
Kurtosls
Median
Mean Abs. Dev.
Mode
Minimum
Maximum
Range
Count
Sum
lst Quartile
3rd Quartile
lnterquartile Range
1.00%
2.50% '
5.00%
10.00%
20.00%
80.00%
90.00%
95.00%
97.50%
99.00%
Price (0)
Data Set
CHAPTER 4 ASSIGNMENT
Name:
Part I Multiple Choice
_ 1. A dot plot shows the range of values along the:
a. vertical axis.
b. ( x, y ) diagonal axis.
c. median axis.
d. horizontal axis.
_ 2. When displaying data with a dot plot, we:
a. do not lose the ident
Chapter 4 Statistics
Problems
3, 6, 8, 12, 14*, 16*, 17*
* long problems appropriate for a take-home test
Going to break slightly from the text here. I have some statistics I want to add so
pay attention
4-1 Gaussian Distribution
In the last chapter we ta
Statistics
Chapter 9 Summary
Sampling Distributions:
Parameter a number that describes a population (usually unknown)
Statistics a number that describes a sample (used to estimate a parameter)
Symbols Used
Sample Statistic
Population
Parameter
Proportions
RED BULL
Founded in 1984, and now
has 40% market share in
energy drink industry
Very Loyal customer base
(Primary audience=
athletes 19-24)
Excellent marketing
capabilities through
extreme sports (Helped
maintain market share)
Red Bull is recognized on
gl
Introduction
Student IQ Ratings
Interval
Distance students travel to class
Ratio
The jersey numbers of a sorority soccer team
Nominal
A students state of birth
Nominal
A students academic class that is, freshman, sophomore, junior, or senior
Ordinal
Numbe