Save
stats
lesson 3
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Angela Olaes
Visit profile
Cards (21)
Measures of Central Tendency
Described and obtained after
summarizing
into measurements like
average
or measures of
central tendency
View source
Central Tendency
A statistical measure to determine a
single
score that defines the center of a distribution. The goal of central is to find the single score that is
most typical
or
most representative
of the entire group
View source
Three Major Types of Central Tendency
Mean
Median
Mode
View source
Mean
The
mean
or
arithmetic mean
is the arithmetic average of a set of observations
View source
Calculating Mean (Ungrouped Data)
Sum
of
all values
divided by the
total frequency
View source
Weighted Mean
A
mean
calculated by giving different
weights
to different
values
View source
Calculating Weighted Mean
Sum
of (each of the item values x
weight
of each item) divided by
sum
of
weights
View source
Midpoint Method
A method to calculate
mean
from grouped data using the
midpoint
of each class interval
View source
Unit Deviation Method
A method to calculate mean from grouped data using the unit deviation from an assumed mean
View source
Class Interval
70-75
76-81
82-87
88-93
94-99
100-105
106-111
112-117
118-123
View source
Frequency (f)
2
7
20
21
39
27
14
10
5
View source
Cumulative Frequency (cf)
2
9
29
50
89
116
130
140
145
View source
Calculating Median (Grouped Data)
1. Get the
Median Class
2. Determine cfb
3. Determine the
lower boundary
of the median class
4.
Frequency
of median class
5. Class Size
6. Median =
Xlb
+ (
n/2
- cfb)/
fm
*
c
View source
Median
Single
value from the data set that measures the
central
item in the data
View source
The frequency distribution of the test results of
100 BS
Math Students in
Statistical Analysis
View source
Class Interval
15-24
25-34
35-44
45-54
55-64
65-74
75-84
85-94
View source
Frequency (f)
5
10
11
23
26
14
8
3
View source
Cumulative Frequency (cf)
5
15
26
49
75
89
97
100
View source
Mode
Observation
or
value
which
appears
the most number of times in the
set
of
values
View source
The results of the IQ test of a group of Psychology students in certain college are presented in a
frequency distribution
View source
Calculating Mode (Grouped Data)
1. Find the
modal class
2. Determine the
class
size
3. Get the
fm1
and
fm2
4.
Mode
=
Xlb
+ (
fm1
/ (
fm1
+
fm2
))
*
c
View source
See similar decks
1.5 State Building in Africa
AP World History > Unit 1: The Global Tapestry (c. 1200 to c. 1450)
64 cards
4.1 Finite state machines
AQA A-Level Computer Science > 4.0 Theory of computation
119 cards
3.2.1 States of Matter
GCSE Physics > Unit 3: Particle Model of Matter > 3.2 Changes of State
46 cards
AP United States History
2170 cards
P1.2 Changes of State
OCR GCSE Physics > Topic P1: Matter
73 cards
9.2 Classification of stars
AQA A-Level Physics > 9. Astrophysics (Optional)
20 cards
3.2 Changes of State
GCSE Physics > Unit 3: Particle Model of Matter
110 cards
14.1 States of Matter
Edexcel GCSE Physics > Topic 14: Particle Model
No cards
2.1 The State and Globalisation
Edexcel A-Level Politics > Component 3: Comparative Politics > 2. Global Politics (Option 3B)
69 cards
5.1 Contextualizing 18th-Century States
AP European History > Unit 5: Conflict, Crisis, and Reaction in the Late 18th Century (1648–1815)
37 cards
1.5.2 States of Matter
CCEA GCSE Physics > Unit 1: Motion, Force, Density, and Kinetic Theory > 1.5 Density and Kinetic Theory
70 cards
C1.1.1 States of Matter
OCR GCSE Chemistry > Topic C1: Particles > C1.1 The Particle Model
19 cards
5.9 Continuity and Change in 18th-Century States
AP European History > Unit 5: Conflict, Crisis, and Reaction in the Late 18th Century (1648–1815)
38 cards
3.1.6 Human Rights and State Crimes
AQA A-Level Sociology > Unit 3: Crime and Deviance with Theory and Methods > 3.1 Crime and Deviance
72 cards
2.2 The Crusades and the Crusader States 1095–1192
OCR A-Level History > Unit Group 2: Non-British Period Study
198 cards
1.4.2 The role of reason and perception
OCR A-Level Philosophy > 1. Epistemology > 1.4 The limits of knowledge
87 cards
AP United States Government and Politics
2626 cards
1.3 Reason as a source of knowledge
OCR A-Level Philosophy > 1. Epistemology
81 cards
2.4.3 The 1848 Revolutions in the German States
OCR A-Level History > Unit Group 2: Non-British Period Study > 2.4 The Challenge of German Nationalism 1789–1919
28 cards
3.2.1 States of Matter
AQA GCSE Physics > Unit 3: Particle Model of Matter > 3.2 Changes of State
81 cards
1.5 States of Matter
Chemistry > Key concepts in chemistry
47 cards