Time Series Wonder-Z electronics Store is considering the sales pattern of the gaming consoles they self-manufacture. They provide you with the following data from the past five years, by seasons: Year 1 Year 2 Year 3 Year 4 Year 5 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 120 100 165 180 125 122 162 170 122 110 155 158 130 105 135 145 131 89 120 130 1. Construct a time series plot and identify which of the following patterns exists in the data? (choose one and enter into the blank) - "Trend but no seasonality", "trend with seasonality", "No trend". 2. Use time series linear regression analysis using dummies for Q1, Q2, and Q3 and include time period "t" to find the parameters for the line that minimizes MSE for this data. Fill in the blanks below to indicate the corresponding parameter estimates: Y-hat = + *Q1 + *Q2 + *Q3 + *t 3. The forecasted second quarter sales in the 6th year is units

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.