ACF_PLOT                Plots ACF of a univariate time series
PACF_PLOT               Plots PACF of a univariate time series
autocorrelation_assumption
                        Check model for residual independence
best_arima              Select Optimal Model based on BIC
check_model_sig         Checking Overall Model Significance
check_stationarity      Check Series for Weak Stationarity
eduperform              Student Performance Data
fit_arima               Fit ARIMA models to univariate data
get_coefficients_variance
                        Get variance of the model coefficients
get_confint             Confidence Intervals of Model Parameters
get_significant_predictors
                        Obtaining only significant predictors from a
                        model
heteroscedasticity_assumption
                        Checking heteroscedasticity assumption
keconomy                Kenya Unemployment Rate and GDP Growth rate for
                        1999-2023
multicollinearity_assumption
                        Multicollinearity Assumption
normality_assumption    Checking normality of residuals
ols_model               Fitting a simple or multiple linear regression
ols_model_sig           F-statistic attributes
ols_model_stats         Model Summary Statistics
predict_dep_var         Prediction from new observations
select_optimal_model    Choosing Best Model Based on AIC, BIC and
                        Adjusted R Squared
