The third step in analyzing consumption and interest rate data is to use data analysis methods to test hypotheses, estimate parameters, and draw conclusions from the data. Data analysis can help measure the magnitude, direction, and significance of the effects of consumption and interest rate data on other economic variables. Descriptive statistics such as mean, median, mode, standard deviation, variance, coefficient of variation, skewness, and kurtosis can describe the central tendency, dispersion, shape, and symmetry of consumption and interest rate data. Inferential statistics such as confidence intervals, hypothesis testing, t-tests, ANOVA, chi-square tests, and correlation coefficients can infer the population characteristics, differences, relationships, and associations from consumption and interest rate data samples. Econometric models like regression analysis, time series analysis, panel data analysis, vector autoregression, cointegration, and error correction models can explain the causal links, dynamic interactions, long-run equilibrium, and short-run adjustment of consumption and interest rate data.