Mathematics Project on Male Female Ratio

Submitted by Editor

Male Female Ratio

Objective

To investigate by how much and how has the male female ratio changed over the generations? What is the estimated Male Female ratio for the next generation taking in account the last 3 generations?

Description

Contacted 5 persons by visiting their place or talking over phone and collected information about number of males and females in their last three generations DATA TAKEN ON PHONE

(i) Generation I

No. of males=11 No. of females=15

(ii) Generation  2

No. of males=5 No. of females=5

(iii) Generation  3

 1, SUNIL SINGLA(ANYNAME)

No. of males=1 No. of females=1

DA TA TAKEN BY VISITING HIS HOUSE

(I) Generation I No. of males=7  No. of females=12

(ii) Generation 2 No. of males=3 No. of females=2

(iii) Generation 3 No. of males=2 No. of females=1

IE

(i)Generation I No. of males=11 No. of females=2

(ii)Generation II No. of males=4 No. of females=5

(iii)Generation III No. of males=3 No.of females=0

ENERATION 1

ENERATION

(i) Generation I

No. of males=4 No. of females=5

(ii) Generation 2

No.of males=5 No. of females=3

(iii) Generation 3

No. of males=1 No. of females=1

(i) Generation I

No. of males=12 No. of females=9

(ii) Generation 2

No. of males=5                                         No. of females=7

(iii) Generation 3

No. of males=1 No. of females=2

ENERATION 1

 Males i females

j

NO. OF MALES=45 NO. OF FEMALES=43

Probability of males=45/88

=0.51

Probability of females=43/88

=0.48

NO. OF MALES=22               NO. OF FEMALES=22

Probability of males=22/44

=0.5

Probability of females=22/44

=0.50

NO. OF MALES=8 NO. OF FEMALES=5

Probability of males=8/13

=0.62

Probability of females=5/13

=0.37

PROBABILITY OF MALES=0.62+0.05

=0.67

PROBABILITY OF FEMALES=0.37-0.04

=0.33

NOTE:

THIS IS THE ESTIMATED PROBABILITY ACCORDING TO EARLIER GENERATION BUT ACTUALLY THE PROBABILITY OF MALES AND FEMALES IS EXPECTED TO BE EQUAL AFTER FEW YEARS.

SUBMITTED BY: _____________ CLASS : X ROLL NO. : SUBMITTED TO Male Female Ratio Objective To investigate by how much and how has the male female ratio changed over the generations? What is the estimated Male Female ratio for the next generation taking in account the last 3 generations? Description Contacted 5 persons by visiting their place or talking over phone and collected information about number of males and females in their last three generations GENERATION1 Males Females GENERATION 2 Males Females GENERATION3 Males Females 1. Sunil Singla(Any Name) Profession: Service DATA TAKEN ON PHONE (i) Generation I No. of males=11 No. of females=15 (ii)Generation 2 No. of males=5 No. of females=5 (iii)Generation 3 No. of males=1 No. of females=1 GENERATION 1 Males Females GENERATION2 Males Females GENERATION3 Males Females 2. Mukesh Garg PROFESSION: CA DATA TAKEN BY VISITING HIS HOUSE (I) Generation I No.of males=7 No.of females=12 (ii) Generation 2 No.of males=3 No.of females=2 (iii) Generation 3 No. of males=2 No. of females=1 3.Ramesh Chawla PROFESSION: Service DATA TAKEN BY VISITING HIS HOUSE (i)Generation I No.of males=11 No.of females=2 (ii)Generation II No.of males=4 No.of females=5 (iii)Generation III No. of males=3 No.of females=0 4. Naveet Singh PROFESSION: STUDENT (i) Generation I No.of males=4 No.of females=5 (ii) Generation 2 No.of males=5 No. of females=3 (iii) Generation 3 No. of males=1 No. of females=1 GENERATION 1 1st Qtr Females GENERATION2 Males Females GENERATION 3 Males Females 5. KRitiKA PROFESSION: Doctor DATA TAKEN ON PHONE (i) Generation I No. of males=12 No. of females=9 (ii) Generation 2 No. of males=5 No. of females=7 (iii) Generation 3 No. of males=1 No. of females=2 Total - GENERATION I NO. OF MALES=45 NO.OF FEMALES=43 Probability of males=45/88 =0.51 Probability of females=43/88 =0.48 GENERATION 2 Males Females Total - GENERATION 2 NO. OF MALES=22 NO.OF FEMALES=22 Probability of males=22/44 =0.5 Probability of females=22/44 =0.50 Total GENERATION 3 NO.OF MALES=8 NO. OF FEMALES=5 Probability of males=8/13 =0.62 Probability of females=5/13 =0.37 Estimate - NEXT GENERATION PROBABILITY OF MALES=0.62+0.05 =0.67 PROBABILITY OF FEMALES=0.37-0.04 =0.33 NOTE: THIS IS THE ESTIMATED PROBABILITY ACCORDING TO EARLIER GENERATION BUT ACTUALLY THE PROBABILITY OF MALES AND FEMALES IS EXPECTED TO BE EQUAL AFTER FEW YEARS.

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