,MAT 121
, G SSA
Quantitative - Cluster sampling Range
· -
Data
Qualitative Data
percentages Sample Standard
· · ·
deviation Formula
Population
Histogram Population standard
·
· ·
Deviation
Dot plot Range
·
·
Parameter ·
pt.
2
·
sample Stemplot
Nomonial Bar Graph
· ·
·
ordinal · Pie Chart
Interval ·
Median
~
Self-selected m Mode
sample
simple random
Midrange
·
*
sample
Super random
·
Population
Sample
Mean
*
systemic Sample Mean
sampling
·
convenience * Mean from
sampling frequency
distribution
·
stratified
Sampling ·
Weighted Mean
, -antitative Data # of counts/measurements (intervals/ ratios
2
types :
1. Discrete counted data (whole #)
6 students in a class
2 .
Continuous measured (weight of adult)
Qualitative Data o names/lables/ numbers (not measurements) -
blood
types,
scales, nomonials
Population - collection of ALL items
Parameter -
characteristics that describe populations (greek letter)
mu p =
population mean
Sigma-V population standard deviation
=
Example Average Salary of All highschool teachers =
$73, 000 a
year
ALL
population highschool teachers
parameter
-
$75, 000
Sample subgroup of
population
characteristic that describes sample-statistic Clatin letter)
T sample
=
mean
S =
Sample standard deviation
Example sample of 20 SU proffessors selected average
,
age
= 45
Population ALL SU proffessors
Sample 20 selected SU proffessors
Statistic
1 45
, G SSA
Quantitative - Cluster sampling Range
· -
Data
Qualitative Data
percentages Sample Standard
· · ·
deviation Formula
Population
Histogram Population standard
·
· ·
Deviation
Dot plot Range
·
·
Parameter ·
pt.
2
·
sample Stemplot
Nomonial Bar Graph
· ·
·
ordinal · Pie Chart
Interval ·
Median
~
Self-selected m Mode
sample
simple random
Midrange
·
*
sample
Super random
·
Population
Sample
Mean
*
systemic Sample Mean
sampling
·
convenience * Mean from
sampling frequency
distribution
·
stratified
Sampling ·
Weighted Mean
, -antitative Data # of counts/measurements (intervals/ ratios
2
types :
1. Discrete counted data (whole #)
6 students in a class
2 .
Continuous measured (weight of adult)
Qualitative Data o names/lables/ numbers (not measurements) -
blood
types,
scales, nomonials
Population - collection of ALL items
Parameter -
characteristics that describe populations (greek letter)
mu p =
population mean
Sigma-V population standard deviation
=
Example Average Salary of All highschool teachers =
$73, 000 a
year
ALL
population highschool teachers
parameter
-
$75, 000
Sample subgroup of
population
characteristic that describes sample-statistic Clatin letter)
T sample
=
mean
S =
Sample standard deviation
Example sample of 20 SU proffessors selected average
,
age
= 45
Population ALL SU proffessors
Sample 20 selected SU proffessors
Statistic
1 45
