#### Calculating Z Score in Excel

Master the art of calculating Z scores using the STANDARDIZE function in Excel. Follow these steps:

- Select the cell where you want the Z score.
- Enter the formula: =STANDARDIZE(x, y), where x is the data point and y is the mean.
- Press Enter, and the Z score will be displayed in the selected cell.

#### Example: Unraveling Z Scores

Illustrate your understanding with an example dataset: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. With a mean of 11 and a standard deviation of 5.7, calculate the Z score for the value 18. In this case, the Z score is 1.75.

#### Utilizing Z Scores

Unlock the potential of Z scores in statistical applications:

**Identifying Outliers:**Detect outliers by comparing Z scores to a threshold (commonly set at 3 or -3). A Z score exceeding these thresholds suggests an outlier.**Standardizing Data:**Facilitate data comparison by standardizing it. Convert measurements into a common format using Z scores, ideal for datasets with varying units.**Calculating Probabilities:**Gauge the likelihood of an event occurring by calculating probabilities using Z scores. With the mean and standard deviation, consult a Z table to determine the probability.

#### In Conclusion

Elevate your statistical prowess with Z scores in Excel. Whether pinpointing outliers, standardizing data for comparison, or calculating probabilities, Z scores prove to be a versatile tool in the realm of statistics and data analysis.