Question

On a typical day, a jewelry store sells 8 bracelets. The data show the number of bracelets sold on each day for four weeks at a jewelry store.
Week 1: 7, 8, 7, 9, 1, 6, 8

Week 2: 6, 7, 8, 7, 9, 8, 17

Week 3: 3, 1, 2, 3, 2, 3, 2

Week 4: 9, 7, 8, 8, 11, 6, 7

For which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year?

CLEAR SUBMIT

y=9

y=3x

y=15

y=x+4

Answer 1

For which week would the mean of the data be a good estimate of the jewelry store's weekly sales throughout the year?

Answer: Week 4's mean would be a good estimate of the jewelry store's weekly sales throughout the year. Because the average of the Week 4's sales is 8. Also we can see the Week 4's data appears without outliers. So the option Week 4: 9, 7, 8, 8, 11, 6, 7  would be a good estimate of the jewelry store's weekly sales throughout the year.

Explanation:

Week 1's mean is:

$\frac{7+8+7+9+1+6+8}{7} =\frac{46}{7} =6.57$

Week 2's mean is:

$\frac{6+7+8+7+9+8+17}{7} =\frac{62}{7} =8.86$

Week 3's mean is:

$\frac{3+1+2+3+2+3+2}{7} =\frac{16}{7} =2.29$

Week 4's mean is:

 $\frac{9+7+8+8+11+6+7}{7} =\frac{56}{7} =8$

Since the week 4's mean is 8, which is same as typical day's sale of bracelet's. Therefore, week 4 will be good estimate of the jewelry store's weekly sales throughout the year.

Answer 2

Answer:

week 4

Step-by-step explanation: