John is having an exam with questions that require many answers. the exam has 20 questions. for every correct answer he gets 5 points and for every mistake he loses 2 points. john answers all of questions and in the end he receives 51 points.*how many correct answers are there? *

Abby is collecting rainfall data. she finds that one value of the data set is a high-value outlier. which statement must be true? abby will use a different formula for calculating the standard deviation. the outlier will increase the standard deviation of the data set. the spread of the graph of the data will not change. abby will not use the mean when calculating the standard deviation.