Grade 11 Coding Worksheet: Statistics Skill Builder

Statistics Skill Builder

Grade 11 Coding Statistics Skill Builder Medium 15 Questions 10 Views

Classroom Worksheet

Grade 11 Coding Worksheet: Statistics Skill Builder

Statistics Skill Builder

Name____________________________

Date________________

Score______ / 15

Grade: Grade 11

Subject: Coding

Topic: Statistics

Time: 20 Minutes

Difficulty: Medium

Questions: 15

Instructions:
Read each question carefully and answer in the space provided. Show your reasoning when needed. Use coding and statistics vocabulary accurately. Questions increase in difficulty.

Skills Practiced:

Statistics
Coding
Critical Thinking
Problem Solving

1Question

What is the difference between a population and a sample in statistics?

2Question

Name the two most common types of numerical data: discrete and continuous. Give one example of each.

3Question

In coding, what does the mean of a set of numbers represent?

4Question

Find the mean of these test scores: 72, 80, 85, 93, 70.

5Question

Find the median of these values: 14, 18, 21, 25, 30, 33, 40.

6Question

Find the mode of these values: 4, 6, 7, 4, 9, 4, 10, 6.

7Question

A programmer records the time, in seconds, that an app takes to load: 2.1, 2.4, 2.0, 2.8, 2.3. Find the range.

8Question

Explain why a histogram is useful for displaying numerical data.

9Question

A class survey shows these numbers of hours spent coding last week: 3, 5, 2, 6, 4, 4, 7, 3. Find the mean and median.

10Question

A student says the median is always the same as the mean. Is this statement true? Explain.

11Question

A developer tests 12 code runs and records the number of bugs found: 0, 1, 0, 2, 1, 0, 3, 1, 0, 2, 1, 0. What is the mode and what does it tell you?

12Question

The following data set represents response times in milliseconds: 120, 125, 130, 128, 122, 300. Which measure of center would best represent the data, and why?

13Question

A coding project group has these project scores: 78, 82, 85, 88, 90, 95. If a new score of 60 is added, how does the mean change?

14Question

Write a short pseudocode algorithm to calculate the mean of a list of numbers.

15Question

A game developer wants to analyze player completion times and notices the data is skewed right. Which statistic is more reliable for the center of the data, mean or median? Explain your choice.

Answer Key

#	Answer
1	A population is the full group being studied, while a sample is a smaller part of that group used to draw conclusions.
2	Discrete data takes separate whole-number values, such as the number of students in a class. Continuous data can take any value in a range, such as height.
3	The mean is the average of the values, found by adding all values and dividing by the number of values.
4	The mean is 80.
5	The median is 25.
6	The mode is 4.
7	The range is 0.8 seconds.
8	A histogram shows how numerical data is distributed across intervals, making patterns, spread, and clusters easy to see.
9	Mean = 4.25 hours; median = 4 hours.
10	No. The median and mean can be different, especially when the data has outliers or is skewed.
11	The mode is 0. It tells you that finding no bugs was the most common result.
12	The median would be best because 300 is an outlier and would pull the mean upward.
13	The mean decreases. The score of 60 lowers the average.
14	Example pseudocode: Set sum to 0; for each number in the list, add the number to sum; divide sum by the count of numbers; output the result.
15	The median is more reliable because it is less affected by large values in a right-skewed data set.