find the a.mean b. modal class the frequency distribution represents the commisi

Question

find the    a.mean      b. modal class the frequency distribution represents the commision earned indollars by 100 salespeople employed at several branches of alarge chain store classlimits                        frequency 150-158                              5 159-167                              16 168-176                              20 177-185                              21 186-194                              20 195-203                              15 204-212                                 3 find the    a.mean      b. modal class the frequency distribution represents the commision earned indollars by 100 salespeople employed at several branches of alarge chain store classlimits                        frequency 150-158                              5 159-167                              16 168-176                              20 177-185                              21 186-194                              20 195-203                              15 204-212                                 3 150-158                              5 159-167                              16 168-176                              20 177-185                              21 186-194                              20 195-203                              15 204-212                                 3

Explanation / Answer

(a) mean =(154*5+163*16+172*20+181*21+190*20+199*15+208*3)/(5+16+20+21+20+15+3)=180.2 (b) modal class is 177-185. (highest frequency)

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