where g X is the sum of all values of X, and N is the number of X values. As an illustration, the mean of the numbers 3, 5, 12, and 5 is 25 3 1 5 1 12 1 5 5 5 6.25 4 4 For the reaction-time data in Table 2.2, the sum of the observations is 18,078. When we divide that number by N 5 300, we get 18,078/300 5 60.26.Deluxe Wood Platform Bed / No Box Spring Needed / Wood Slat Support / Antique Espresso Finish, Twin. 22,626. 2 offers from $279.80. #5. ZINUS Vivek Wood Platform Headboards & Bedsteads Collection. As a leading supplier of quality furniture, our expert team of skilled designers and craftsmen pridesive pieces for homes of all tastes. Our metal collection epasses styles from classically traditional products, to the more contemporary products, whilst our wooden Dean Jean California King Upholstered Panel Bed $495 was $595. (1710) Quicklook. Pierce Espresso California King Panel Bed W/Storage $1,395. (13) Quicklook. Westridge California King Panel Bed By Drew & Jonathan for Living Spaces $1,095. (4) Quicklook.