Statistics Quiz

What is the purpose of formulating clear questions in statistical problem-solving?

• To ensure the relevancy of collected data and avoid misconceptions

• To increase the sample size

• To make the data biased

• To confuse the data collectors

What is the difference between qualitative and quantitative data?

• Qualitative data can only be classified as nominal, while quantitative data can only be classified as ordinal

• Qualitative data are always continuous, while quantitative data are always discrete

• Qualitative data are descriptive in nature, while quantitative data are measured on a numerical scale

• Qualitative data are measured on a numerical scale, while quantitative data are non-numerical values

Which type of data can be classified as discrete or continuous?

• Qualitative data

• Nominal data

• Quantitative data

• Ordinal data

What is the purpose of a box plot in statistical analysis?

• To represent qualitative data

• To show only the mean of the data

• To display the structure of data at one glance

• To confuse the viewers with complex data

What does a negatively skewed distribution indicate?

• Mean < Mode < Median

• Mean > Median > Mode

• Mean < Median < Mode

• Mean = Median = Mode

What is the value that lies directly in the middle of a data set?

• Mode

• Median

• Variance

• Mean

What is the measure of how much variation exists within a set of data compared to its mean?

• Median

• Mean

• Average

• Standard Deviation

Which type of data should be represented by a pie chart?

• Continuous data

• Discrete data

• Quantitative data

• Qualitative data

What is the formula to calculate the upper fence in a box plot?

• Q3 + 1.5xIQR

• Q1 + 1.5xIQR

• Q3 - 1.5xIQR

• Q1 - 1.5xIQR

What is the purpose of a histogram in statistical analysis?

• To show only the mean of the data

• To give a visual overview of the distribution of quantitative data values

• To display frequencies of qualitative data

• To represent continuous data