Quantitative Data Analysis Worksheet

Quantitative Data Analysis

Read each question carefully and answer to the best of your ability. Show all your work for calculations.

1. The following are the scores of 10 students on a math test: 78, 85, 92, 78, 88, 95, 80, 78, 90, 82. Calculate the mean, median, and mode for this data set.

Mean:

Median:

Mode:

2. Which of the following measures is most affected by outliers in a data set?

3. Calculate the range and standard deviation for the following data set: 10, 12, 15, 11, 13, 16, 14.

Range:

Standard Deviation (show your steps):

4. The following data represents the number of hours students spent studying for an exam:

Hours: 2, 3, 4, 2, 5, 3, 6, 4, 3, 5

Create a bar graph to represent this data.

5. A high standard deviation indicates that data points are generally close to the mean.

6. The   is the value that appears most often in a data set.

7. The difference between the highest and lowest values in a data set is called the  .