In what format should I enter my data?

Enter numbers separated by commas, spaces, or line breaks. Use a dot for decimals (for example 12.5); each number is treated as a single data point.

What is the difference between the mean and the median?

The mean is the sum of all values divided by their count and is sensitive to extreme values. The median is the middle value of the sorted data and is far more resistant to outliers.

Can a data set have more than one mode?

Yes. If several values share the same highest frequency, the data is multimodal and the tool lists all of them. If no value repeats, the mode is undefined.

How are standard deviation and variance related?

Variance is the average of the squared differences from the mean, and standard deviation is the square root of the variance. Standard deviation is easier to interpret because it shares the same unit as your original data.

How are outliers detected?

The standard IQR rule is applied: any value below Q1 − 1.5×IQR or above Q3 + 1.5×IQR is flagged as an outlier. This makes it easy to spot extreme points that distort your data.

What are quartiles (Q1, Q3) and IQR used for?

Q1 marks the bottom 25% and Q3 the top 25% of the data, while IQR = Q3 − Q1 measures the spread of the middle 50%. Because IQR is less affected by extreme values than standard deviation, it is a robust measure of dispersion.

Are the results exact enough for official reports?

Calculations use standard statistical formulas and are accurate for everyday analysis, but results are for informational purposes. For academic publication or formal decisions, confirm assumptions such as the sample-versus-population distinction with an expert.

Statistics calculator — Free Online

📊 Available: Descriptive stats (mean, median, mode, std dev, quartiles, IQR outliers).
🧪 Coming (Pro): Z-test · t-test (bağımsız + eşli) · One-way ANOVA · Korelasyon (Pearson/Spearman) · Linear regression
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Dataset (separate by comma, space or newline)10 values

Mean (x̄)

16,6

Median

16,5

Mode

None

Std. Dev.

3,2042

Variance

10,2667

Count (N)

Minimum

Maximum

Range (Max-Min)

Sum

166

Quartile Analysis (Box Plot)

Min

Q2 (Med)

16,5

Max

IQR: 5Skewness: 0,1445

Sorted Dataset

12131415161718192022

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📖 How to Use

Enter values

Fill required numbers in the form.

Pick parameters

Currency / date / rate / bracket.

Compute

Result appears instantly.

Copy / share

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Frequently asked questions

It computes the mean, median, mode, standard deviation, variance, quartiles (Q1-Q3), interquartile range (IQR), and an outlier analysis all at once. Every result updates instantly based on the data set you enter.

Statistics Calculator

📖 How to Use

Frequently asked questions