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Exam (elaborations)

STA1510 - short notes with example + solved past papers

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this document cover topics defining and collecting data organizing and visualizing variables numerical descriptive measures basic probability discrete probability normal and sampling distribution confidence interval estimation solved past paper and summarized collective notes based ...

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  • October 25, 2021
  • 19
  • 2021/2022
  • Exam (elaborations)
  • Questions & answers
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EXAM GUIDE
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oints to oueunber

Vanablepe
Categorica Numercal
Cqvaltatve) (Quovnhtah ve)

Nominal DISCRETE
Nomed ateqones wlole numeu ta Uoluts

LOrclinal CoNTINOoUS
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inaplie d order
araie

ConhgenC Table
ecend a Aonencull AB Tlal
ttal
2x IoO
2
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2xio0
33.33%

Pencetage c Colomn -fota
x x loe
/2
66.67

, 3
FREQUENCY DISTRIBU7ION 3 0 2


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display O 2 3 S
tivst dgt is called steui
lustdiit called leaf 2 S S667

Shape of requcuC 7 I8
disnbuhon
of data
Futd 1aR - (n +1)x n no


2/4 vOlves avalible
2 - (n+1)
ds-(n+ 1) x 3/


32 =
O - Symme hicesl mode <medion & meah
Os-2 O- Positively skeuc mode >medhon > mean
4s- Negohel skewed

Mean Medion Mode, Range, 1OR
how wmouy tuere a e
Meons totol of numbeus olvided b no.



Enaple: 1,2, 3, 4, 5 + 2+5 +4 6



w uch is n fe naidelle n+1
Mecdioun s
no.

median is 3
Exmple .2, 3, S In orderc
aYra

most
Mode No tuet appeons
mode 2
Eluupl: 2 , 2, 3, 4, SS

o sualert wnber
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Laye eS- 4 =


Etunnple: , 2, 3,1 ,S

IOR: ntergvanh l
equafo
Vange

, Detemna class Interuals
Interu al width hishest
= valuc -


(louwest vale
no. of closses
NOTE:otal of fve queny column mubl
noof values alwouys eqva
roportion or ve)ative {vequency

RF no of vale n eac class
otal o ovalucs
NOTE total off velative fequen Column must aluwauus
be 1.00. Ve total of " column mustaluACUy be



Crdeed Array
Ofronge data in orde rom smallest Ualuc
e orqe st Ualue

mortont Symbols
somple variace
Somple stondard deviotion
X Somple mean
n Somple Size
CV Cbehuenl voriciton
Z 2 scOe


PopulCihon mean
Opopulahon uoriation
opudahon stovndord deuahon

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