This Grade 5 challenge sheet blends probability prediction with graph reading and statistical summary calculation. Students compute probabilities for marble bags, then update those chances when marbles are added or removed from the bag dynamically. They also interpret line plots and bar graphs to find mean, median, mode, and range, building strong bridges between statistical summaries and visual data displays seen in everyday newspapers and textbooks today.
Style:
Probability and Statistics
Part A: Multiple Choice
Circle the best answer for each question.
1. A bag has 3 red and 2 blue marbles. What is P(red)?
A) 3/5
B) 2/5
C) 1/2
D) 1/5
2. A bag has 3 red and 2 blue marbles. If you add 5 more red marbles, what is the new P(red)?
A) 3/5
B) 8/10
C) 5/10
D) 2/10
3. A line plot shows X marks at 2(2), 3(3), 4(1). What is the mode?
A) 2
B) 4
C) 3
D) 9
4. A bar graph shows 4, 6, 8, 10, 12 books read. What is the mean?
A) 6
B) 10
C) 12
D) 8
Part B: Fill in the Blank
Write the correct answer on each line.
1. A bag has 4 green and 6 yellow marbles. P(green) = 4/10.
2. Remove 2 yellow marbles from the same bag. New P(green) = 4/8.
3. A line plot has X's at 1(2), 2(4), 3(2), 4(2). The mean is 2.4.
4. The same line plot has a median of 2.
5. A bar graph shows quiz scores 7, 8, 8, 9, 10. The range is 3.
Probability and Statistics
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A bag has 3 red and 2 blue marbles. What is P(red)?
A) 3/5
B) 2/5
C) 1/2
D) 1/5
2. A bag has 3 red and 2 blue marbles. If you add 5 more red marbles, what is the new P(red)?
A) 3/5
B) 8/10
C) 5/10
D) 2/10
3. A line plot shows X marks at 2(2), 3(3), 4(1). What is the mode?
A) 2
B) 4
C) 3
D) 9
4. A bar graph shows 4, 6, 8, 10, 12 books read. What is the mean?
A) 6
B) 10
C) 12
D) 8
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) A bag has 4 green and 6 yellow marbles. P(green) = 4/10.
2) Remove 2 yellow marbles from the same bag. New P(green) = 4/8.
3) A line plot has X's at 1(2), 2(4), 3(2), 4(2). The mean is 2.4.
4) The same line plot has a median of 2.
5) A bar graph shows quiz scores 7, 8, 8, 9, 10. The range is 3.
Ready to Practice?
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9 Questions
12-18 minutes
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