Math Statistics Challenge

Calculate the mean of the following numbers: 10, 15, 20, 25, 30

• 22

• 18

• 20

• 28

Find the median of the data set: 12, 15, 18, 21, 24

• 24

• 21

• 18

• 15

Identify the mode in the list: 5, 7, 7, 9, 10

• 9

• 5

• 10

• 7

What type of graph is best used to represent categorical data?

• Line graph

• Bar graph

• Pie chart

• Scatter plot

Define central tendency in statistics.

• Central tendency in statistics is the middle or central value of a dataset, representing the center of the distribution of values.

• Central tendency is the lowest value in a dataset

• Central tendency is the highest value in a dataset

• Central tendency is the sum of all values in a dataset

Explain the concept of statistical variability.

• Statistical variability is only applicable to qualitative data.

• Statistical variability is the measure of how spread out the values in a data set are or how much they differ from the mean.

• Statistical variability refers to the process of calculating the mean of a data set.

• Statistical variability is the measure of how similar the values in a data set are to each other.

If the mean of a data set is 50 and there are 10 numbers in the set, what is the total sum of the numbers?

• 500

• 450

• 550

• 600

Arrange the following numbers in ascending order: 35, 20, 45, 15, 30

• 15, 20, 25, 30, 35

• 20, 15, 30, 35, 45

• 15, 20, 30, 35, 45

• 45, 35, 30, 20, 15

Which measure of central tendency is affected by outliers?

• Range

• Mean

• Mode

• Median

What is the range of the data set: 10, 15, 20, 25, 30

• 20

• 35

• 5

• 18