Empirical rule. States that, in a normal distribution, about 68% of the terms are within one standard deviation of the mean, about 95% are within two standard deviations, and about 99.7% are within three standard deviations (normal curve). Lurking Variable.
Since then, thanks to an additional boost from TLC, the Duggarsâ net worth has grown to an estimated $3.5 million. Although we canât all have lucrative reality TV contracts, most of us can learn a few things from the Duggarsâ money philosophyâ¦.
1 The 28-year-old niece of notoriously-strict family patriarch Jim Bob Duggar married her fiance Dillon King on Sunday evening.  Unlike her cousins, Jessa and Jill, who both covered their shoulders and chests in modest bridal gowns, Amy opted for a more risque design.