Transcript File

Remember?
1. Do you remember how to get to List
1 in your calculator?
2. How do you get the average and
standard deviation in your calculator
after typing information in?
3. Where is the variance located in
your calculator?
-Tests handed back next…
Final Review
Day 1
Categorical or Quantitative?
Grade Point Average
Q
Favorite Color
C
Height
Q
Weight
Q
Type of Pet You Own
C
Age
Q
Discrete or Continuous?
Age
D/C
Weight
C
Height
C
# of Pets
D
# of Video Games You Own
D
Distance You Live from School C
Frequency versus Proportion
What is the
frequency of blondes?
Bl, Bl, Br, Red, Br
2
Frequency versus Proportion
What is the
proportion of blondes?
Bl, Bl, Br, Red, Br
0.4
Frequency versus Proportion
What is the
percentage of blondes?
Bl, Bl, Br, Red, Br
40%
Make a List…
What are all of the
graphs we discussed in
Chapter 2?
Make a List…
Pie Chart, Bar Graph,
Stem and Leaf Plot,
Dot Plot, Histogram,
Time Plot, Pareto
Chart
Pareto Chart

Create a Stem & Leaf Plot
85, 72, 75, 90, 85,
85, 88, 93, 95, 90
7 25
8 5558
9 0035
What is the range, mode, median, mean?
What is the range, mode, median, mean?
Time Series Plot
Mean, Median, Standard Deviation, Variance
85, 72, 75, 90, 85, 85
Mean, Median, Standard Deviation, Variance
88, 93, 95, 90, 65,
45, 58, 62, 72, 93, 95
Mean, Median, Standard Deviation, Variance
3.2, 3.5, 2.5, 4.0,
1.7, 2.5, 3.8, 3.6, 3.6
Empirical Rule
Females between 25 and 34 years of
age have a bell-shaped distribution
for height, with a mean of 65 inches
and standard deviation of 3.5 inches
Give an interval within which 68%
of the data falls.
From 61.5 to 68.5
Empirical Rule
Females between 25 and 34 years of
age have a bell-shaped distribution
for height, with a mean of 65 inches
and standard deviation of 3.5 inches
Give an interval within which 95%
of the data falls.
From 58.0 to 72.0
Empirical Rule
Females between 25 and 34 years of
age have a bell-shaped distribution
for height, with a mean of 65 inches
and standard deviation of 3.5 inches
Give an interval within which 99.7%
of the data falls.
From 54.5 to 75.5
Empirical Rule
Which scenario creates a graph that
is MORE spread out?
1) μ=4.5, σ=1.9
2) μ=7.2, σ=3.4
#2 – bigger standard deviation
Box and Whisker Plots
Create a Box and Whisker Plot
85, 72, 75, 90, 85, 85
Create a Box and Whisker Plot
88, 93, 95, 90, 65,
45, 58, 62, 72, 93, 95
Create a Box and Whisker Plot
3.2, 3.5, 2.5, 4.0,
1.7, 2.5, 3.8, 3.6, 3.6
Interquartile Range
Minimum = 33,100
Q1 = 39,250
Median = 42,700
Q3 = 48,850
Maximum = 61,800
Q3 – Q1 = 9,600
Z-score
The mean is 8.20 and the
standard deviation is 4.56.
Find the z-score associated
with the value of 1.
What does this mean?
Z-score
The mean is 8.20 and the
standard deviation is 4.56.
Find the z-score associated
with the value of 11.3.
What does this mean?
Z-score
The mean is 8.20 and the
standard deviation is 4.56.
Find the z-score associated
with the value of 8.20.
What does this mean?
Learning Objective 2:
Class Exercise
There are 7 students in a class who are either freshman,
sophomores, juniors, or seniors.
The number of students in this class who are juniors is _____.
3
Number of Students
3
2
1
0
Freshmen
Sophomores
Juniors
Class Standing
Seniors
What is the skew?
Unimodal or bimodal?
Time for our study guide!!
I will post answers to
my web site some time
tomorrow after you
have had a chance to
work through it.
Time Line
Tuesday – Chapters 3 and 4
Wednesday – Chapters 5 and 6
Thursday – FINAL!!!!
Friday – FINAL!!!!!!!
TURN IN YOUR BOOKS!!!
Last few minutes to sign
yearbooks…