CompTIA DA0-001 Exam - Topic 1 Question 64 Discussion

Actual exam question for CompTIA's DA0-001 exam

Question #: 64
Topic #: 1

[All DA0-001 Questions]

Which one of the following would not normally be considered a summary statistic?

Az-score.

BMean.

CVariance.

DStandard deviation.

Show Suggested Answer

Suggested Answer: A

Simply put, a z-score (also called a standard score) gives you an idea of how far from the mean a data point is. But more technically it's a measure of how many standard deviations below or above the population mean a raw score is. A z-score can be placed on a normal distribution curve.

by Leslee at Nov 21, 2025, 05:21 PM

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Brett

3 months ago

Summary stats describe data sets, z-score doesn't fit.

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Providencia

3 months ago

I feel confident about this question. Z-score is the odd one out.

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Gussie

3 months ago

Yeah, z-score shows position, not summary.

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Selma

4 months ago

Mean, variance, and standard deviation summarize data.

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Rupert

4 months ago

Agreed, z-score is more about individual data points.

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Hoa

4 months ago

I think it's A) z-score. Not a summary statistic.

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Corinne

5 months ago

The mean is the most common summary statistic.

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Beatriz

5 months ago

Wait, I thought z-scores summarized data too?

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Timothy

5 months ago

I agree, the mean, variance, and standard deviation are all summary stats.

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Florinda

5 months ago

A z-score is definitely not a summary statistic.

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Dorathy

5 months ago

The z-score is the answer, no doubt. It's like the black sheep of the summary statistic family. Everyone else is just chilling, and the z-score is like, "Look at me, I'm special!"

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Arminda

5 months ago

Haha, this question is a real head-scratcher. Next, they'll be asking us if the median is a summary statistic. What's next, the mode?

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Lavonna

6 months ago

Wait, are you telling me the standard deviation isn't a summary statistic? That's like the bread and butter of any data analysis!

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Diego

6 months ago

This question seems familiar; I feel like I had a similar one where we had to identify different types of statistics.

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Micheal

6 months ago

I remember practicing with mean, variance, and standard deviation, but I'm not entirely sure about the z-score being a summary statistic.

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Gail

6 months ago

I'm a little unsure about this one. The z-score seems different from the other options, but I want to double-check my understanding before answering.

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Carmela

6 months ago

Okay, I've got this. The z-score is a standardized score, not a summary statistic like the others listed. I'm confident that's the right answer.

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Sharan

6 months ago

The z-score is the odd one out here. The mean, variance, and standard deviation are all classic summary statistics, but the z-score is a different type of metric.

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Hoa

7 months ago

I think a z-score is more of a standardized value rather than a summary statistic, right?

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Tequila

7 months ago

I think the variance is the odd one out here. I mean, who needs to know how much the data points vary from the mean? Just give me the mean and standard deviation, and I'm good to go.

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Rebbecca

7 months ago

The z-score is definitely not a summary statistic. It's more like a fancy way to say "how many standard deviations away from the mean am I?"

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Alisha

7 months ago

I’m leaning towards z-score as the answer, but I could be mixing it up with something else we studied.

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Carin

7 months ago

Variance is a summary statistic, no doubt about it!

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Lisbeth

8 months ago

Hmm, this is a tricky one. I know the mean, variance, and standard deviation are all summary stats, but I'm not sure about the z-score. I'll have to think this through carefully.

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