Math Problem Statement
Round each z-score to the nearest hundredth.
A data set has a mean of x = 71 and a standard deviation of 10.1. Find the z-score for each of the following.
Solution
To calculate the z-score for each value, you use the z-score formula:
where:
- is the value in the data set,
- is the mean of the data set,
- is the standard deviation of the data set.
Given:
- Mean () = 71
- Standard deviation () = 10.1
Please provide the values for which you want to calculate the z-scores, and I can help you calculate and round them to the nearest hundredth.
Would you like to proceed with specific values?
Here are some questions you might explore after calculating z-scores:
- What does the z-score tell us about a data point's position in a normal distribution?
- How does a higher or lower z-score affect the interpretation of data points?
- How would you interpret a z-score of 0?
- What would a z-score of ±2.5 suggest about a data point's location relative to the mean?
- Can z-scores be used for comparing data sets with different means and standard deviations?
Tip: Z-scores standardize different data sets, making them comparable across different scales.
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Math Problem Analysis
Mathematical Concepts
Statistics
Z-scores
Standardization
Formulas
z = (x - μ) / σ
Theorems
Standard Normal Distribution
Suitable Grade Level
Grades 9-12
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