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Question $13$

Period

Actual

Forecast

$1$

$1482$

$2$

$1062$

$3$

$796$

$4$

$852$

$5$

$1152$

$6$

$1131$

$7$

$1004$

$8$

Please use the table above to answer the following questions

Using the simple mean method, the forecast for periods $7$ and $8$ respectively $($rounding to the nearest whole number$)$ is

a$.$

$975$ units; $1025$ units

b$.$

$1079$ units; $1068$ units

c$.$

$1297$ units; $958$ units

d$.$

$1086$ units; $726$ units