**Additional Practice**

NOTE: In each of the above video lessons, you’ll find a **Reinforcement Activities** box containing several practice questions that are specifically related to the concepts covered in that lesson (e.g., the lesson on standard deviation). Conversely, the practice questions below cover a variety of topics under the umbrella of GMAT Statistics, and are intended for general reinforcement.

Given this, you may find it beneficial to work on the questions below __after__ you’ve mastered the module content by watching the video lessons and answering concept-specific practice questions from the Related Resources boxes. For more on this learning strategy, visit our course overview page.

__Problem Solving__** (level of difficulty: 350 to 500) **

Calvin’s chemistry grade

Public transportation

1.75 standard deviations

Change in mean

Voltage readings

__Problem Solving__** (level of difficulty: 500 to 650)**

List S and list T

Money spent at dinner

Beef and veal

Homes in town X

Q consecutive integers

Median and range of 25

Sum of the two smallest

Combined averages

Average of four numbers

Change in standard deviation

__Problem Solving__** (level of difficulty: 650 to 800)**

Cricket player

College theses

82 consecutive odd integers

Tom’s diet

Seven distinct integers

21 different numbers

__Data Sufficiency__** (level of difficulty: 350 to 500)**

Eleven consecutive integers

Standard deviation of set Q

Shipment of oranges

Is x less than 16?

__Data Sufficiency__** (level of difficulty: 500 to 650)**

Shelves J and K

Set K

Does mean = median?

__Data Sufficiency__** (level of difficulty: 650 to 800)**

Employed or over 65

Comparing salaries

**Practice from the Official Guides**

**Official Guide for GMAT Review (2018 edition)**

Problem Solving: 14, 21, 40, 41, 52, 84, 96, 116, 137, 144, 151, 158, 164, 166, 171, 194, 211, 217

Data Sufficiency: 244, 282, 295, 298, 300, 348, 358, 363, 375, 378, 381, 385, 392, 394, 396

**Official Guide for GMAT Review (2017 edition)**

Problem Solving: 14, 20, 26, 38, 47, 71, 88, 99, 120, 125, 141, 148, 150, 155, 184, 206, 214

Data Sufficiency: 244, 281, 284, 331, 336, 348, 354, 367, 368, 375, 378, 381, 390, 392, 394, 397

**Official Guide for GMAT Review (2016 edition)**

Problem Solving: 10, 15, 20, 32, 79, 88, 111, 112, 124, 131, 133, 137, 157, 170, 196, 212

Data Sufficiency: 14, 45, 47, 88, 92, 103, 110, 123, 124, 132, 135, 138, 152, 155, 157, 162

**Official Guide for GMAT Review (2015/13th edition)**

Problem Solving: 12, 16, 30, 53, 67, 91, 101, 109, 112, 132, 145, 183, 208

Data Sufficiency: 20, 37, 38, 70, 84, 87, 95, 109, 110, 120, 121, 123, 139, 143, 146, 154

While answering practice questions from the *Official Guide for GMAT Review* (2018, 2017, 2016 or 2015), you can enter your responses directly into our downloadable **Improvement Chart**. This will help track your progress and identify areas of weakness.