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¦.
Estimated Net Worth: $15 Million. Kay Robertson is the matriarch of the Duck Dynasty family as the wife of Phil Robertson and mother to Alan, Jase, Willie, and Jep. As to be expected, the majority of her wealth is from the companyâs success; however, Kay gets a bit more with the show and she also wrote her own cookbook, Miss Kayâs Commander Kitchen.