Statistics Practice Worksheet

Name: ________________________ Date: _____________________

Part A: Matching

Match each term with the correct definition by writing the letter in the blank.

1. Mean ____________
   
   
2. Median ____________
   
   
3. Mode ____________
   
   
4. Range ____________
   
   
5. Variance ____________
   
   
6. Standard Deviation ____________
   
   
7. Outlier ____________
   
   
8. Sample ____________
   
   
9. Population ____________
   
   
10. Frequency ____________
    
    

Definitions:
A. The average of all values, found by summing them and dividing by the count.


B. The middle value when a data set is ordered.


C. The number that appears most often in a data set.


D. The difference between the highest and lowest values in a data set.


E. A measure of how spread out squared deviations are around the mean.


F. The square root of the average of squared deviations from the mean.


G. A value much larger or smaller than the rest of the data set.


H. A subset of the population used for analysis.


I. The complete set of individuals or items being studied.


J. The count of how often each value appears in a data set.

Part B: Fill in the Blanks

Write the correct term in each blank. Use each term only once.

1. The ________ measures the average distance of data points from the mean.
   
   
   
   
   
2. When organizing data, listing the values in order and selecting the middle one gives you the ________.
   
   
   
   
   
3. The ________ is useful for identifying values that lie far outside the rest of the data.
   
   
   
   
   
4. To describe the entire group we want to study, we would refer to the ________.
   
   
   
   
   
5. When surveying a smaller group to estimate characteristics of a larger group, we work with a ________.
   
   
   
   
   

For additional review, see Statistics Flashcards Set.

Statistics Worksheet Answer Key

This key provides correct answers along with a brief explanation for each item to support grading and student understanding.

Part A: Matching (10 points)

Each correct pairing is worth 1 point.

1. Mean — A
   • Explanation: The mean is calculated by summing all values and dividing by the count.
2. Median — B
   • Explanation: The median is the middle value once the data are ordered.
3. Mode — C
   • Explanation: The mode is the value that appears most frequently.
4. Range — D
   • Explanation: The range is the difference between the highest and lowest values.
5. Variance — E
   • Explanation: Variance measures how squared deviations spread around the mean.
6. Standard Deviation — F
   • Explanation: The standard deviation is the square root of the average squared deviation.
7. Outlier — G
   • Explanation: An outlier is a value much larger or smaller than the rest of the data.
8. Sample — H
   • Explanation: A sample is a subset of the population used for analysis.
9. Population — I
   • Explanation: The population is the complete set of items or individuals under study.
10. Frequency — J

• Explanation: Frequency is the count of how often each value appears.

Part B: Fill in the Blanks (5 points)

Each correct term is worth 1 point.

1. The standard deviation measures the average distance of data points from the mean.
   • (Links to F above)
2. When organizing data, listing the values in order and selecting the middle one gives you the median.
   • (Links to B above)
3. The outlier is useful for identifying values that lie far outside the rest of the data.
   • (Links to G above)
4. To describe the entire group we want to study, we would refer to the population.
   • (Links to I above)
5. When surveying a smaller group to estimate characteristics of a larger group, we work with a sample.
   • (Links to H above)

Total: 15 points

Scoring Tips:

• Partial credit may be awarded if a student’s explanation shows understanding of the term even if the letter/word is slightly off.
• Use the explanations above to guide feedback and ensure consistent grading.

For additional review or clarification, students can refer to the Statistics Flashcards Set.

Statistics Flashcards Set

Print or project each card so that the term appears on the front side and the definition on the back side. Below are the ten flashcards:

Flashcard 1

Front: Mean
Back: The average of all values, found by summing them and dividing by the count.

Flashcard 2

Front: Median
Back: The middle value when a data set is ordered from smallest to largest.

Flashcard 3

Front: Mode
Back: The value that appears most frequently in a data set.

Flashcard 4

Front: Range
Back: The difference between the highest and lowest values in a data set.

Flashcard 5

Front: Variance
Back: A measure of how spread out squared deviations are around the mean.

Flashcard 6

Front: Standard Deviation
Back: The square root of the average of squared deviations from the mean.

Flashcard 7

Front: Outlier
Back: A value much larger or smaller than the rest of the data set.

Flashcard 8

Front: Sample
Back: A subset of the population chosen for analysis or measurement.

Flashcard 9

Front: Population
Back: The complete set of individuals or items being studied.

Flashcard 10

Front: Frequency
Back: The count of how often each value appears in a data set.