Statistics is everything you got start to know

Stats 1.0

https://www.khanacademy.org/math/probability#table-of-contents

Stats 2.0

https://courses.edx.org/courses/course-v1:PurdueX+416.2x+3T2016/course/

stats 3.0

https://courses.edx.org/courses/course-v1:ColumbiaX+DS101X+1T2016/course/

stats beyond with EXCEL

https://mva.microsoft.com/en-US/training-courses/data-analysis-with-excel-16654?l=w0fgRO8sC_306573942