MODELING AND FORECASTING FERTILITY RATES OF PAKISTAN IQRA FATIMA AYESHA LATIF FARAH YASMEEN ACTUARIAL SCIENCE & RISK MANAGEMENT DEPARTMENT OF STATISTICS UNIVERSITY OF KARACHI
FERTILITY Fertility is the major component of population dynamics World widely the size and structure of population is entirely dependent on fertility Fertility means bringing more people into the population.
ANALYZING FERTILITY Trends in fertility are rated as the most difficult of the demographic variables to project Information about women’s reproductive behavior and attitudes. Fertility rates represent the most important modeling variable in any population model These models are of critical importance
Pakistan ranks 6 th among the most populous countries of the world en.wikipedia.org/wiki/List_of_countries_and_dependencies_by_population
Crude birth rate General fertility rate Child women ratio Standardized birth rate Total fertility rate Age specific fertility rate Gross reproduction rate Net reproduction rate Replacement index BASIC MEASURES OF FERTILITY
TOTAL FERTILITY RATE (TFR) TFR is the most widely used fertility measure It is unaffected by differences of changes in age-sex composition It is an easily understandable measure of hypothetical completed fertility A TFR is a measure of the average number of children a woman will have during her childbearing years
PREVIOUS WORK
WHICH FACTORS EFFECT FERTILITY Education Age at first marriage Age at first birth Work status of women Family planning
TFR OF PAKISTAN YearsTFRYearsTFRYearsTFRYearsTFR http :// data.worldbank.org/indicator/SP.DYN.TFRT.IN?
Functional Form Proper Transformation Form of Simple Linear Regression Exponential ModifiedExp onential Logarithm Reciprocal Logarithm Vapor Pressure APPLICATION OF VARIOUS NON LINEAR MODELS
ARIMA MODEL ACF and PACF of second differenced series
MODELS MEMAEPEMAPE Exponential Model Modified Exponential Model Logarithm Model Reciprocal Logarithm Model Vapor Pressure Model ARIMA(1, 2, 2) COMPARISON
FORECASTING TFR PointForecastLo 95Hi
CONCLUSION ARIMA (1,2,2) is the best model for forecasting TFR of Pakistan TFR will decline and slowly level off TFR is expected to be approximately 1.4 children per woman in 2035
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