What is the formula of mean? The correct answer is B. 53.22 how to solve that?

Matching Type. Population total number of pool Descriptive Statistics make judgements of probability Mean X Mode most frequently occuring Median the midpoint Choose... Check make judgements of probability most frequently occuring shows variability of group Partially correct difference of the highest and lowest value Marks for this submission total number of pool measures of central the midpoint A subset of the whole to search OWhat is the mean for the given data? X Frequency 45 A 57 3 64 Select one: O a. 64.22 O b. 53.22 O c. 57.22 d. 45.22 Clear my choice Check