The monthly sales for Yazici$$ Batteries, Inc., were as$$ follows:

$$

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sept

Oct

Nov

Dec

Sales

$21$

$21$

$15$

$12$

$11$

$16$

$17$

$19$

$22$

$22$

$20$

$23$

This exercise contains only parts b and c$.$

Part $2$

$$b$)$ The forecast for the next month$($Jan$)$ using the naive method$=$

$$

enter your response here sales $($round your response to a whole$$ number$).$The monthly sales for Yazici$$ Batteries, Inc., were as$$ follows:

$$

Month

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sept

Oct

Nov

Dec

Sales

$21$

$21$

$15$

$12$

$11$

$16$

$17$

$19$

$22$

$22$

$20$

$23$

This exercise contains only parts b and c$.$

Part $2$

$$b$)$ The forecast for the next month$($Jan$)$ using the naive method$=$

$$

enter your response here sales $($round your response to a whole$$ number$).$