# FORECAST

Calculates, or predicts, a future value by using existing values

## Syntax

```
FORECAST(x, known_y_s, known_x_s)
```

## Arguments

| Argument       | Description                                    | Required |
|----------------|------------------------------------------------|----------|
| `x`            | The data point for which you want to predict a value | Required |
| `known_y_s`   | The dependent array or range of data          | Required |
| `known_x_s`   | The independent array or range of data        | Required |

## Examples

### Predict sales based on trend

=FORECAST(A1, A2:A6, A7:A11)

Result ⇒11.4760

|     |     |
|-----|-----|
|     | A   |
| 1   | 6   |
| 2   | 7   |
| 3   | 9   |
| 4   | 15  |
| 5   | 21  |
| 6   | 1   |
| 7   | 2   |
| 8   | 3   |
| 9   | 4   |
| 10  | 5   |

### Forecast temperature

=FORECAST(A1, A2:A6, A7:A11)

Result ⇒23

|     |     |
|-----|-----|
|     | A   |
| 1   | 30  |
| 2   | 20  |
| 3   | 25  |
| 4   | 30  |
| 5   | 35  |
| 6   | 10  |
| 7   | 15  |
| 8   | 20  |
| 9   | 25  |
| 10  | 30  |

### Linear regression prediction

=FORECAST(A1, A2:A6, A7:A11)

Result ⇒3.4865

|     |     |
|-----|-----|
|     | A   |
| 1   | 5   |
| 2   | 1   |
| 3   | 3   |
| 4   | 5   |
| 5   | 7   |
| 6   | 1   |
| 7   | 2   |
| 8   | 3   |
| 9   | 4   |
| 10  | 5   |

## Related Functions

Other Statistical functions:

- [AVEDEV](/content/docs/formulas/avedev.html) \- Returns the average of the absolute deviations of data points from their mean
- [AVERAGE](/content/docs/formulas/average.html) \- Returns the average of given arguments. Text is ignored.
- [CORREL](/content/docs/formulas/correl.html) \- Returns the correlation coefficient between two data sets
- [COUNT](/content/docs/formulas/count.html) \- Returns the count of numeric values in a dataset.
- [COUNTA](/content/docs/formulas/counta.html) \- Returns the count of values in a list of arguments including text, logical values, error values, and empty text.
- [COUNTIF](/content/docs/formulas/countif.html) \- Returns the count of cells that meet a specified criteria
- [COUNTIFS](/content/docs/formulas/countifs.html) \- Returns the count of criteria_ranges based on the given criterions.
- [LARGE](/content/docs/formulas/large.html) \- Returns the k-th largest value in a data set
- [MAX](/content/docs/formulas/max.html) \- Returns the largest number from the provided arguments
- [MEDIAN](/content/docs/formulas/median.html) \- Returns the median of the given numbers
- [MIN](/content/docs/formulas/min.html) \- Returns the smallest number from the provided arguments
- [MINIFS](/content/docs/formulas/minifs.html) \- Returns the minimum value from a range that meets multiple criteria.
- [MODE](/content/docs/formulas/mode.html) \- Returns the most frequently occurring value in a data set
- [PERCENTILE](/content/docs/formulas/percentile.html) \- Returns the k-th percentile of values in a range
- [PERCENTRANK](/content/docs/formulas/percentrank.html) \- Returns the rank of a value in a dataset as a percentage (0 to 1) of the dataset
- [RANK](/content/docs/formulas/rank.html) \- Returns the rank of a number from the list of other numeric values
- [SMALL](/content/docs/formulas/small.html) \- Returns the k-th smallest value in a data set
- [STDEV](/content/docs/formulas/stdev.html) \- Returns the estimated standard deviation based on a sample
- [STDEVP](/content/docs/formulas/stdevp.html) \- Calculates standard deviation based on the entire population
- [SUMIF](/content/docs/formulas/sumif.html) \- Returns the sum of a range depending on criteria
- [SUMPRODUCT](/content/docs/formulas/sumproduct.html) \- Returns the sum of products for a list of arguments
- [VAR](/content/docs/formulas/var.html) \- Returns the estimated variance for a sample of data
- [VARP](/content/docs/formulas/varp.html) \- Calculates variance based on the entire population