There are $1,040$ observations in the filtered data that includes the software industry, reps without a college degree, and reps who are older than $40$ years. Copy these observations to a separate worksheet or data frame in order to answer the following questions.

Estimate the model: Salary $=$ $0+$ $1$NPS $+$ $.$

Use the estimated model to predict the salary of sales reps with an NPS score of $7.$

Note: Do not round intermediate calculations and round your final answer to $2$ decimal places.

What percent of the sample variations in the salary are explained by NPS$?$

Note: Round your answer to $2$ decimal places.