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¦.
The first is titled The Duggars: 20 and Counting!, which was released on December 2, 2008. Their second is A Love That Multiplies, which was released June 7, 2011. How Jim Duggar Made His Money â Television and Real Estate. Estimated Net Worth: $3.5 Million.