Sew Good is a fashion apparel chain that sells a variety of clothes in California. Below are the actual demands and the forecasts that Sew Good recorded for 20 of their clothing designs from the past

Sew Good is a fashion apparel chain that sells a variety of clothes in California. Below are the actual demands and the forecasts that Sew Good recorded for 20 of their clothing designs from the past season.

In the following problem round all the ratio values to 2 decimal places.

For example, use 0.97 instead of 0.9733 or 0.9689.

Actual Demand Forecast

546 914

639 698

534 518

732 595

699 909

1019 1063

1174 1160

1092 1084

608 776

908 758

1162 938

1300 2108

739 870

941 1278

831 762

915 1270

682 524

799 708

1281 946

640 806

The point forecast for Sew Good's new "mood indigo" blue jeans the company plans to release in the coming season is 1450.

What value of the descriptive standard deviation should Sew Good use for fitting the normal distribution? Please choose the closest number.

1. 174
2. 251
3. 298
4. 55
5. 332
6. 120