Analyzing Employee Growth Trends

The video tutorial explains how to apply a three median line to a trend series plot, using an example from the Math's Quest textbook. It covers dividing data into three equal groups, calculating medians, determining the gradient, and calculating the intercept. The tutorial concludes with using the trend line to predict future employee numbers, emphasizing the importance of rounding when dealing with discrete variables like people.

What is the main focus of the problem discussed in the video?

• Calculating the average of a data set

• Finding the mode of a data set

• Determining the range of a data set

• Applying a three median line to a trend series plot

What was the initial number of employees when the company started?

• 12 employees

• 14 employees

• 1 employee

• 10 employees

How many groups are the data points divided into for the three median line?

• Three groups

• Five groups

• Two groups

• Four groups

What is the x-coordinate of the left median point?

• 2.5

• 10.5

• 6.5

• 5.5

What is the gradient of the line calculated using the median points?

• 0.5

• 1.5

• 1.125

• 0.875

Which formula is used to derive the equation of the line?

• y = ax + b

• y = mx + c

• y = mx + b

• y = ax + c

What is the predicted number of employees after 12 months?

• 29 employees

• 30 employees

• 31 employees

• 32 employees

Why is the predicted number of employees rounded up to 31?

• Because the company policy requires rounding up

• Because 30.1 is closer to 30

• Because you cannot have a fraction of an employee

• Because 30.1 is closer to 31