Paul Revere was born in the North End of Boston, in December 1734. His father's name was Apollos Rivoire and his mother's name was Deborah Hitchborn. His father was a silversmith who came to America as an escapee from religious imprisonment in France. He attended the North Writing School when he was 7 and 13 because his father had planned for him to continue the tradition of silversmithing. For most middle and lower class children, education began at Dame schools where children studied until the age of eight. At school the focus was more on discipline and religion than on education. Revere Sr. wanted his son to follow in his footsteps, but to become a silversmith and run the shop Paul had to learn reading, writing and mathematics. So he was enrolled in the North Writing School, which was the largest and best public school in Boston. To be accepted, a student had to know basic reading skills and agree to pay a portion of the heating bill. The salaries of the principal and teacher were paid by the government. This allowed kids like Paul Revere to have the opportunity to get a high-quality education to succeed in professions. By the age of thirteen, Paul had graduated from North Writing and began to show interest in learning about his father's career; who taught him the secrets of his trade. Paul was becoming a master silversmith in no time. In 1754, when Paul was nineteen, his father died and he took over the family business. To help his family Paul had to be intelligent, he put his knowledge into making surgical instruments, engraving, printing copper plates, selling glasses and replacing missing teeth. In 1757 he married Sarah Orne and had eight children. When she died, Revere married Rachel Walker, with whom he had eight more children. Revere, who expanded his wealth by b...... half of the paper ...... will fall within the first standard deviation, 95% will fall within the first two standard deviations, and 99.7% will fall within the top three standard deviations of the mean. Rule of thumb is used in statistics to show the final results. After a standard deviation has been found and before exact data can be collected, this rule can be used as an estimate of the outcome of the new data. This probability can be used to collect data that may be time-consuming or even impossible to find. When the mean equals the median and the values ​​cluster around the mean and median, producing a bell-shaped distribution, then we can use the rule of thumb to examine variability. In this bell-shaped dataset, we can calculate the mean and standard deviation. The mean indicates the average value of the data set. The standard deviation indicates the average dispersion around the mean.