Question

question #8 the table below shows the number of homes sold in south county during the months of october through december over a 5 - year period. south county home sales

year	oct	nov	dec
2003	214	155	206
2004	184	173	202
2005	148	136	158
2006	151	123	143

what is the difference in the mean number of homes sold in october and the mean number of homes sold in december over the 5 - year period? a 2 b 6 c 10 d 19

Explanation:

Step1: Calculate mean for October

Sum of October sales: $106 + 214+184 + 148+151=803$. Mean of October sales = $\frac{803}{5}=160.6$.

Step2: Calculate mean for December

Sum of December sales: $194+206 + 202+158+143 = 903$. Mean of December sales = $\frac{903}{5}=180.6$.

Step3: Find the difference

Difference = $180.6 - 160.6=20$.

Answer:

D. 20