1.1.2. Descriptive Statistics

Try these first

1. 1.

   Define what is meant by the term 'population' in statistics.

   Hint

   Think of it as the complete group we are studying.

2. 2.

   What does the 'mean' of a dataset represent?

   Hint

   It's calculated by adding all values and dividing by how many there are.

3. 3.

   What does 'mean' represent in descriptive statistics?

   • A. Median value
   • B. Average value
   • C. Most frequent value

   Hint

   Remember how we calculate mean from a set of numbers.

4. 4.

   True or False: The mode is always the same as the median.

   • True
   • False

   Hint

   Consider examples where there are repeating values versus a sorted list.

5. 5.

   A research team collected temperature readings over a month: [70, 72, 68, 75, 74, 72, 71]. Calculate the mean, median, mode, and standard deviation.

   Hint

   Sort the readings first for median, and calculate averages for mean and mode.

6. 6.

   Imagine you have two datasets:

   1. Dataset A: [45, 50, 55, 60]
   2. Dataset B: [40, 60, 70, 80]

   Discuss how the standard deviations of both datasets might affect the decision-making process.

   Hint

   Compare the spread of values in each dataset to understand their implications.