A function to calculate and format a mean and standard deviation.

`fmt_mean_sd(x, format = "%.1f", sd_format = NULL)`

- x
The input data vector or data frame column.

- format
A formatting string suitable for input into the

`sprintf`

function. By default, this format is defined as "%.1f", which displays the mean and standard deviation with one decimal place.- sd_format
An optional format for the standard deviation. If this parameter is not supplied, the standard deviation will be formatted the same as the mean, according to the `format` parameter.

The formatted mean and standard deviation.

This function calculates a mean and standard deviation, and formats using
`sprintf`

.
You may control the format using the **format** parameter.
Function will ignore NA values in the input data. Results are
returned as a character vector.

Other helpers:
`fmt_cnt_pct()`

,
`fmt_median()`

,
`fmt_n()`

,
`fmt_quantile_range()`

,
`fmt_range()`

```
v1 <- c(4.3, 3.7, 8.7, 6.1, 9.2, 5.6, NA, 0.7, 7.8, 4.9)
# Format mean and standard deviation
fmt_mean_sd(v1)
# "5.7 (2.7)"
```