Sample Standard Deviation and Data Analysis

The video tutorial reviews an advanced exam paper, focusing on statistics, differential calculus, and integral calculus. The instructor explains the approach of tackling questions by topic rather than sequentially. A detailed walkthrough of a statistics question involving a stem and leaf plot is provided, including calculating the sample standard deviation using a calculator. The tutorial emphasizes understanding the process and checking calculations for accuracy.

What is the approach taken by the teacher to review the exam paper?

• Random order

• Sequential order from start to finish

• By topic order

• Only difficult questions

In the first statistics question, what does the stem and leaf plot represent?

• Weekly sales of toilet paper

• Daily sales of toilet paper

• Monthly sales of toilet paper

• Yearly sales of toilet paper

What is the range of the data set in the first statistics question?

• 35

• 43

• 50

• 77

How is the unknown value 'x' in the data set determined?

• By looking at the plot

• Through algebraic manipulation

• By guessing

• Using a calculator

What is the top value in the data set used to calculate the range?

• 35

• 43

• 30

• 77

What is the first step in using the calculator to find the sample standard deviation?

• Calculating the mean

• Clearing previous data

• Inputting the data

• Setting up the calculator

Which mode should be selected on the calculator for this data set?

• Single variable

• Graphing

• Bivariate

• Population

What is the correct option to select for calculating the sample standard deviation?

• Sample standard deviation

• Sum

• Population standard deviation

• Mean

What is the calculated sample standard deviation for the data set?

• 12.345

• 13.149

• 14.567

• 15.678

What is the final step after calculating the sample standard deviation?

• Re-enter the data

• Verify the calculation

• Clear the calculator

• Move to the next question