Zoom Logo

2020-2021 SLA- Math 215 - Shared screen with speaker view
Durga’s iPhone
23:50
hello everyone
Julius Ngwa
24:38
Wednesdays Sessions
Julius Ngwa
29:32
Minimum = Smallest Value
Julius Ngwa
29:43
Maximum = Largest
Julius Ngwa
32:24
English Class vs. History Class
Julius Ngwa
33:49
High Scores in the History Class compared to the English Class
Julius Ngwa
34:29
Side by Side Comparison about your Day
Julius Ngwa
34:31
Data
Julius Ngwa
35:36
Chapter 3
Julius Ngwa
35:43
Summarize our Data using Statistics
Julius Ngwa
36:38
Center of your Data is
Julius Ngwa
37:42
Sample: X-bar
Julius Ngwa
37:53
Population: Mu
Julius Ngwa
39:57
Two Modes = Bi-modal
Julius Ngwa
40:28
No Mode
Julius Ngwa
41:58
Median
Julius Ngwa
42:06
Mean
Julius Ngwa
42:08
Mode
Julius Ngwa
42:09
Median
Julius Ngwa
44:05
Two numbers in the Middle
Julius Ngwa
44:13
n = 6 (Even number)
Mylanda Bradley
45:35
I cant hear him anymore
Mylanda Bradley
45:43
Ohh nevermind lol
Julius Ngwa
49:57
Class of 20 Students
Julius Ngwa
50:11
Reported the Number of Siblings that they Have
Julius Ngwa
51:40
The Mean for Grouped Data
Julius Ngwa
56:17
X values are Range of Values
Julius Ngwa
56:21
0 - 49 Range
Julius Ngwa
56:31
Value that would represent that Class 0 - 49
Durga’s iPhone
56:33
I have to go gn everyone
Julius Ngwa
56:37
Midpoint
Julius Ngwa
56:47
(0 + 49) /2
Julius Ngwa
57:29
X values = Midpoint
Julius Ngwa
57:35
f values = Frequency
Deanna Gregorich
58:39
This is confusing me even more
Julius Ngwa
01:00:14
Grouped Data
Julius Ngwa
01:01:10
10 Students
Julius Ngwa
01:03:32
Single Data Points
Julius Ngwa
01:03:36
Grouped Data
Julius Ngwa
01:07:01
Calculator - Single Data Points
Julius Ngwa
01:07:07
Grouped Data
Julius Ngwa
01:08:09
70 72 75 79 84
Julius Ngwa
01:08:28
Setup the Editor
Julius Ngwa
01:08:41
STAT
Julius Ngwa
01:09:19
2nd 1
Julius Ngwa
01:09:23
Commar
Julius Ngwa
01:10:20
STAT
Julius Ngwa
01:10:32
PRESS ENTER (EDIT)
Nidhi Goyal
01:11:12
how can we erase previous list data?
Julius Ngwa
01:11:45
Clear Enter
Nidhi Goyal
01:11:50
got it , thank u
Julius Ngwa
01:12:59
STAT
Julius Ngwa
01:13:01
CALC
Julius Ngwa
01:13:41
FreqList = Grouped Data
Julius Ngwa
01:13:57
Mean = 76
Julius Ngwa
01:14:02
Sum = 390
Julius Ngwa
01:14:08
Standard Deviation
Julius Ngwa
01:14:12
n = 5
Julius Ngwa
01:14:29
Five number Summary
Julius Ngwa
01:15:00
Min = 70 Q1 = 71 Med = 75 Q3 = 81.5 Max = 84
Julius Ngwa
01:15:08
Single Data Points
Nidhi Goyal
01:15:30
how to remember these commands ?
Nidhi Goyal
01:15:52
can we write down on paper in Exam?
Julius Ngwa
01:16:04
Cheat Sheat
Nidhi Goyal
01:16:31
ok
Julius Ngwa
01:16:43
Grouped Data
Julius Ngwa
01:17:14
Class Midpoints = X Values
Julius Ngwa
01:17:21
Frequencies = F Values
Julius Ngwa
01:17:31
Mean
Julius Ngwa
01:17:48
FreqList (X values and F values)
Julius Ngwa
01:18:00
STAT
Julius Ngwa
01:18:07
Press Enter (EDIT)
Julius Ngwa
01:18:21
Title (Clear Enter)
Julius Ngwa
01:18:40
L1 - X values
Julius Ngwa
01:18:44
L2 - F values
Julius Ngwa
01:19:45
STAT
Julius Ngwa
01:19:51
CALC
Julius Ngwa
01:20:01
1 VAR STAT
Julius Ngwa
01:20:44
Mean = 137
Julius Ngwa
01:21:06
n = 50 (Total Frequency)
Julius Ngwa
01:21:20
Five Number Summary
Julius Ngwa
01:21:52
Min = 25 Q1 = 75 Med = 125 Q3 = 175 Max = 275
Nidhi Goyal
01:22:18
can we change L1 name to X?
Nidhi Goyal
01:22:26
& L2 name to F?
Julius Ngwa
01:26:09
IQR = Interquartile Range
Julius Ngwa
01:29:29
Varies a lot more
Julius Ngwa
01:29:45
Spread is greater in St Louis compared to San Francisco
Deanna Gregorich
01:30:18
Deanna Gregorich
Nidhi Goyal
01:30:41
Nidhi Goyal
Breanna Held
01:30:41
Breanna Held
Janeesha Harcourt
01:30:44
Janeesha Harcourt
Erik Ludaway
01:30:50
Erik Ludaway
Julius Ngwa
01:37:32
Calculate the Variance and Standard Deviation
Julius Ngwa
01:37:37
Manually
Julius Ngwa
01:37:48
Calculator
Julius Ngwa
01:39:42
Deviation: Value - Mean
Julius Ngwa
01:40:08
How far is each point away from the Mean
Julius Ngwa
01:41:19
Deviations Squared
Julius Ngwa
01:41:49
Sum of the deviations squared is 40
Julius Ngwa
01:42:12
Sigma Squared (Population)
Julius Ngwa
01:43:00
Variance provides a measure on average how far each value is away from the Mean.
Julius Ngwa
01:43:30
Variance = 8
Julius Ngwa
01:46:15
Sample
Julius Ngwa
01:46:31
Table To summarize all these Symbols
Julius Ngwa
01:47:07
Context = Sample
Julius Ngwa
01:48:14
S-squared is the Variance for the Sample
Julius Ngwa
01:53:47
Symbols
Julius Ngwa
01:54:00
Symbols Extensively
Julius Ngwa
01:58:11
Variance
Julius Ngwa
01:58:52
2nd STAT
Julius Ngwa
01:59:45
Variance for the Population
Julius Ngwa
02:00:28
Standard Deviation for the Population
Julius Ngwa
02:00:50
1 VAR STAT
Julius Ngwa
02:03:51
Percentile
Julius Ngwa
02:05:35
Five Number Summary (Box Plot)
Julius Ngwa
02:06:38
Ascending Order
Erik Ludaway
02:08:15
No questions here
Deanna Gregorich
02:08:16
no
Breanna Held
02:08:25
no
Julius Ngwa
02:08:47
Position of the 1st Quartile
Julius Ngwa
02:10:44
Statistical Rule (Round Up)
Julius Ngwa
02:12:38
Min = 20
Julius Ngwa
02:12:45
Q1 = 24
Julius Ngwa
02:12:50
Median = 29
Julius Ngwa
02:12:57
Q3 = 34
Julius Ngwa
02:13:02
Max = 38
Julius Ngwa
02:13:12
Five number Summary. Using your Calculator
Julius Ngwa
02:14:53
Cannot Round up the 5 because 5 is already a Whole Number
Julius Ngwa
02:19:10
Position in your Data
Julius Ngwa
02:20:51
Z-score is how many standard deviations we are away from the mean
Julius Ngwa
02:25:40
Standardize these two test scores
Julius Ngwa
02:25:43
Z-scores
Julius Ngwa
02:25:48
Same Scale
Deanna Gregorich
02:27:52
Thanks!
Janeesha Harcourt
02:27:57
thank you, goodnight
Breanna Held
02:28:06
Thank you! have a good night! See you next week