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3-1
S-IC.A.2
Decide
a specified model is consistent with results
Lines
andif Angles
from a given data-generating process.
S-CP.A.1
Holt Geometry
Describe events as subsets of a sample space (the set
of outcomes) using characteristics (or categories) of the
outcomes, or as unions, intersections, or complements of
other events (“or”, “and”, “not”).
Lines
and
Angles
3-1

Combined variation

Inverse variation

Joint variation
Holt Geometry
3-1 Lines and Angles
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Pearson 11.2
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Holt Geometry
3-1 Lines and Angles
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Holt Geometry
3-1
TOPIC:
Lines and
Name:Angles
Daisy Basset
11.2
Probability
Date :
Subject:
Period:
Objective:
Notes
Describe events as subsets
of a sample space (the set
of outcomes) using
characteristics (or
categories) of the outcomes,
or as unions, intersections,
or complements of other
events (“or”, “and”, “not”).
Holt Geometry
3-1 Lines and Angles
Vocabulary
 Experimental probability
 Equally likely outcomes
 Theoretical probability
Key Concept
 Experimental probability
 Theoretical probability
Holt Geometry
1. Of the 60 vehicles in a
teachers’ parking lot
today, 15 are pickup
trucks. What is the
experimental probability
that a vehicle in the lot
is a pickup truck?
3-1 Lines and Angles
Holt Geometry
Lines and Angles
3-1
P(event) = # of times
event occurs
# of trials
P(pickup) = # of pickup trucks
# of vehicles
15

 0.25  25%
60
The probability that a vehicle in
the lot is a pickup truck is 0.25.
Holt Geometry
Lines and Angles
3-1
2. A bucket contains
15 blue
pens, 35 green pens, and
40 red pens. You pick one
pen at random. Find each
theoretical probability.
P(event) = # of times event occurs
# of likely outcomes
Holt Geometry
A. P(green pen)
3-1 Lines and Angles
P(green) = # of green pens
total # of pens
35
7

 0.39  39%
P(green) =
90 18
Holt Geometry
B. P(blue pen or red pen)
3-1 Lines and Angles
P(blue or red) = # of blue or red
total # of pens
15  40 55

P(blue or red) =
90
90
11

 0.61  61%
18
Holt Geometry
C. P(not a blue pen)
3-1 Lines and Angles
P(not blue) = # of not blue
total # of pens
90  15 75
P(not blue) =

90
90
5
  0.83  83%
6
Holt Geometry
3-1
D.
Lines
and Angles
P(green
pen
or not a red pen)
P(green or not red) = # of green or not red
total # of pens
35  15 50

P(green or not red) =
90
90
5
  0.56  56%
9
Holt Geometry
3-1 Lines and Angles
Summary
D
L
I
Q
Holt Geometry
Summarize/reflect
What did I do?
What did I learn?
What did I find most
interesting?
What questions do I still
have? What do I need
clarified?