Hi! I’m doing these problems for a geometry homework and I’m hella confused? can somebody help me please? (and could you include your work so that I know how to solve them in future?) thank you so much! *I’ll give points* :)

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.