Math Grade 7 Quiz Comparative Inferences Using Data Measures - 7.SP.B.4

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Question 1 of 10

1. Question
If Sample A has a larger standard deviation than Sample B, what does this mean?
- A) Sample A has less variability.
- B) Sample B is more consistent.
- C) Sample A has more outliers.
- D) Sample B has a higher mean.
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Question 2 of 10

2. Question
How does random sampling support valid inferences about populations?
- A) By guaranteeing 100% accuracy.
- B) By reducing bias and representing the population fairly.
- C) By eliminating the need for variability measures.
- D) By focusing only on the measures of center.
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Question 3 of 10

3. Question
What are the common measures of center used to draw inferences about populations?
- A) Range and mode
- B) Mean and median
- C) Standard deviation and mean
- D) Median and range
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Question 4 of 10

4. Question
If the average word length in a sample from a Book A is 6 letters, and from Book B is 7 letters, what can be inferred?
- A) Words in Book B are generally longer.
- B) Words in Book A are more complex.
- C) Both books have the same word length.
- D) The books cannot be compared.
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Question 5 of 10

5. Question
Which measure of variability is most helpful when comparing two populations?
- A) Mode
- B) Median
- C) Range
- D) Standard deviation
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Question 6 of 10

6. Question
If two samples have the same mean but different ranges, what does this suggest?
- A) They have the same variability.
- B) They have different variabilities.
- C) They cannot be compared.
- D) They must have the same median.
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Question 7 of 10

7. Question
Why is it important to consider both measures of center and variability when comparing populations?
- A) It provides a more comprehensive view of the data.
- B) It reduces calculation time.
- C) It ensures the same results.
- D) It is less confusing.
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Question 8 of 10

8. Question
A science book’s chapter has words with an average length of 5.2 letters and a standard deviation of 1.8, while a history book’s chapter has words with an average length of 5.0 letters but a standard deviation of 2.1. What can be inferred?
- A) Science book words are generally longer.
- B) History book words have more variability in length.
- C) Both books have words of similar lengths.
- D) It's impossible to draw a conclusion.
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Question 9 of 10

9. Question
When the mean salaries of two groups are significantly different, but their medians are similar, what does this indicate?
- A) There are outliers affecting the mean.
- B) Both samples are exactly the same.
- C) The mode is affecting the median.
- D) The standard deviation is zero.
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Question 10 of 10

10. Question
What’s the effect of outliers on measures of center and variability?
- A) Outliers do not affect these measures.
- B) Outliers can significantly skew the mean.
- C) Outliers reduce the range.
- D) Outliers increase the mode.
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Math Grade 7 Quiz Comparative Inferences Using Data Measures – 7.SP.B.4

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