Engineering
Engineering, 26.08.2021 19:20, tybizz

The following time series shows the number of units of a particular product sold over the past six months. MonthUnits Sold (Thousands)
18
23
34
45
512
610
a. Compute a 3-month moving average (centered) for the above time series.

b. Compute the mean square error (MSE) for the 3-month moving average.

c. Use alpha = 0.2 to compute the exponential smoothing values for the time series.

answer
Answers: 3

Other questions on the subject: Engineering

image
Engineering, 03.07.2019 15:10, EmilySerna
Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.
Answers: 1
image
Engineering, 04.07.2019 16:10, TheOriginalMeyah
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
image
Engineering, 04.07.2019 18:10, skpdancer1605
Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2
Answers: 3
image
Engineering, 04.07.2019 18:10, DestyHilBan1183
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
Do you know the correct answer?
The following time series shows the number of units of a particular product sold over the past six m...

Questions in other subjects:

Konu
Social Studies, 08.10.2019 23:30
Konu
Mathematics, 08.10.2019 23:30