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Data Handling — Chapter Test

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Q1
Which word describes the value that appears most often?
The mode is the most frequent value.
Q2
Getting heads when you toss a fair coin is ___ to getting tails.
Heads and tails are equally likely on a fair coin.
Q3
Rolling an 8 on a normal six-sided dice is ___ ?
A dice only shows 1 to 6, so an 8 is impossible.
Q4
The sun setting in the evening is ___ ?
The sun setting is certain — it is sure to happen.
Q5
What is the mean of 2, 4, 6?
(2 + 4 + 6) ÷ 3 = 4.
Q6
What is the mean of 5, 10, 15?
(5 + 10 + 15) ÷ 3 = 30 ÷ 3 = 10.
Q7
What is the mode of 3, 5, 3, 7, 3?
3 appears three times, more than any other value.
Q8
What is the median of 4, 6, 8?
The middle value of 4, 6, 8 is 6.
Q9
What is the mean of 10, 20, 30, 40?
(10 + 20 + 30 + 40) ÷ 4 = 100 ÷ 4 = 25.
Q10
Test scores are 8, 9, 8, 10, 8. What is the mode?
8 appears three times, so the mode is 8.
Q11
A double bar graph is most useful for comparing ___ ?
It compares two groups side by side.
Q12
In a class survey, cricket fills half the pie chart. What does this mean?
Half the circle means half the class chose cricket.
Q13
What is the mean of 12, 15, 18, 15?
(12 + 15 + 18 + 15) ÷ 4 = 60 ÷ 4 = 15.
Q14
What is the median of 2, 4, 4, 6, 9?
In order, the middle value of five numbers is the third, which is 4.
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