Business Statistics.pdf
per month and there are 80 students in class XI & 8 students in Class XII are Statistics. Use all the formulae discussed here to calculate r between. India's ...
Frequently Used Statistics Formulas and Tables
Class Width = (increase to next integer) number classes upper limit + lower all groups. 2. 2 all groups number of groups; total sample size.
Measures of Central Tendency
Calculate Arithmetic Mean from the data showing marks of students in a class in an economics test: 40 50
SYLLABI & COURSES Class XI
Meaning: Scope and importance of statistics in Economics? Unit 2: Collection Need for complex numbers especially to be motivated by inability to solve every.
DEHRADUN PUBLIC SCHOOL ASSIGNMENT (2022-23) SUBJECT
STATISTICS FOR ECONOMICS. CHAPTER:- 1 (INTRODUCTION). Answer the following questions. Q1. Scarcity of resources applies to all: a. Individuals.
CHAPTER- VIII- Index Number Ch.8 (Ver-12).pmd
STATISTICS FOR ECONOMICS. This index is now being prepared with base 2012 There are several formulae for working out an index number and every formula needs ...
Business Statistics Unit 4 Correlation and Regression.pdf
If the two variables under study are X and Y the following formula suggested by Karl Pearson can be used for measuring the degree of relationship of
Syllabus for B.A. (Hons.) Economics
Course Structure for B.A. (Hons.) Economics: There are a total of fourteen economics core courses that students are required to take across six semesters. All
Statistics for business and economics- Anderson
all trades take place in just six of the 22 European exchanges. TABLE 1.4 ... class size data in Table 3.4. The z-score of 1.50 shows the fifth class size is ...
Applied Mathematics (XI-XII) (Code-241) Session- 2022-23
a) To develop an understanding of basic mathematical and statistical tools and their applications in the field of commerce (business/ finance/economics) and
Measures of Central Tendency
The value of Q1 and Q3 of an ordered series can be obtained by the following. 2022-23. Page 11. 68. STATISTICS FOR ECONOMICS formula where N is the number of.
Frequently Used Statistics Formulas and Tables
Frequently Used Statistics Formulas and Tables. Chapter 2 highest value - lowest value. Class Width = (increase to next integer) number classes.
CHAPTER-VI Measures of Dispersion Ch.-6 (Ver-12).pmd
STATISTICS FOR ECONOMICS value; i.e. 30th value
Measures of Central Tendency
The value of Q1 and Q3 of an ordered series can be obtained by the following. 2022-23. Page 11. 68. STATISTICS FOR ECONOMICS formula where N is the number of.
CHAPTER- VIII- Index Number Ch.8 (Ver-12).pmd
STATISTICS FOR ECONOMICS earns Rs 12000. changes were the same for all four ... Laspeyre's formula: IIP q W. W. i i i n i i n. 01. 11.
KENDRIYA VIDYALAYA SANGATHAN AHMEDABAD REGION
Meaning scope
Class Notes
Class: XI. Topic: CHAPTER: MEASURES OF DISPERSION. Basic concepts: MEANING AND TYPES OF DISPERSION. STANDARD DEVIATIION. Subject: ECONOMICS: STATISTICS FOR.
Correlation Ch.-7 (Ver 8).pmd
STATISTICS FOR ECONOMICS If all the points lie on a line the ... 11. 10. 1. 1.00. 12. 5.5. 6.5. 42.25. 198.00. The formula of Spearman's rank.
Radha bahuguna economics class 11 pdf
Description Book Price NCERT Solutions-Economics for Class 11 by Anubhuti by Disha Experts The book contains all the important formulas definitions
Organisation of Data Ch.-3 (Ver-5).pmd
classes;. • be familiar with the method of tally marking; instance all you need to do is to search ... STATISTICS FOR ECONOMICS.
Frequently Used Statistics Formulas and Tables
Chapter 2
highest value - lowest valueClass Width = (increase to next integer)number classes upper limit + lower limitClass Midpoint = 2
Chapter 3
sample size population size frequencyn N f sum w weightSample mean:
Population mean:
Weighted mean:
Mean for frequency table:
highest value + lowest valueMidrange2x
xn x N wxxw fx xf 2 2 2 2Range = Highest value - Lowest value
Sample standard deviation: 1
Population standard deviation:
Sample variance:
Population variance: xx
s n x N sChapter 3
Limits for Unusual Data
Below : - 2
Above: 2
Empirical Rule
About 68%: - to
About 95%: -2 to 2
About 99.7%: -3 to 3
22Sample coefficient of variation: 100%
Population coefficient of variation: 100%
Sample standard deviation for frequency
table: ( 1)s CVx CV n fx fx snnSample z-score:
Population z-score: xx
zs x z 311 3
Interquartile Range: (IQR)
Modified Box Plot Outliers
lower limit: Q - 1.5 (IQR) upper limit: Q + 1.5 (IQR)QQ 2Chapter 4
Probability of the complement of event ( ) = 1 - ( )Multiplication rule for independent even
tsGeneral multiplication rules
( ) ( ) ( , ) AP not A P A
P A and B P A P B
P A and B P A P B given A
Addition rule for mutually exclusive events ( ) ( ) + ( )General addition rule
( ) ( ) + ( ) ( )P A and B P A P A given BPAorB PA PBP A or B P A P B P A and B !Permutation rule: ( )! nr nPnr !Combination rule: !( )! nr nCrnrPermutation and Combination on TI 83/84
n Math PRB nPr enter r n Math PRB nCr enter rNote: textbooks and formula
sheets interchange "r" and "x" for number of successesChapter 5
Discrete Probability Distributions:
22Mean of a discrete probability distribution:
Standard deviation of a probability distribution: [ ( )]x Px x PxBinomial Distributions
number of successes (or x) probability of success = probability of failure1 = 1
Binomial probability distribution
Mean:Standard deviation:
r nr nr r p q q p pqPr Cpq
np npqPoisson Distributions
2 number of successes (or ) = mean number of successes (over a given interval)Poisson probability distribution
2.71828
(over some interval) r rx e Prr e mean 3Chapter 6
Normal Distributions
Raw score:
Standard score: xz
x zMean of distribution:
Standard deviation of distribtuion:
(standard error)Standard score for :
x x x x n x xznChapter
7One Sample
Confidence Interval
/2 for proportions ( ): ( 5 and 5) (1 ) where p np nq pE p pE ppEzn rpn /2 /2 for means ( ) when is known: where for means ( ) when is unknown: where with . . 1xE xE Ezn xE xE sEtn df nChapter 7
Confidence Interval: Point estimate ± error
Point esti
mate =Upper limit + Lower limit
2Error = Upper limit - Lower limit
2 2 /2 2 /2 2 /2 means: proportions: with preliminary estimate for0.25 without preliminary estimate for z
nE z n pqpE z npESample Size for Estimating
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