If showing an up/down arrow next to a number, should the number still include a sign?

No you should not use the sign alongside that arrow.

1. What does an arrow next to a number mean?
2. What do the up and down arrows mean on cell phone?
3. What key number is down arrow?
4. What is a no change symbol?

What does an arrow next to a number mean?

'>' means 'greater than' and '<' means 'less than'. The open end is facing the bigger number and the arrow points to the smaller number. 3 is less than 8. We can write '3 < 8', so that the arrow is pointing at the smaller number.

What do the up and down arrows mean on cell phone?

Usually, the up and down arrows for either Wi-Fi and 4G indicate that there is a connection to the router (Wi-Fi) and the broadband cellular network (4G LTE), respectively. The device is uploading and downloading data by both pathways. Techy Masala.

What key number is down arrow?

press and hold down the Alt key, type the Alt Code value of the arrow you want, for example for an arrow down symbol, type 2 5 on the numeric pad , release the Alt key and you got a ↓ downwards arrow.

What is a no change symbol?

a thin dash (e.g. -), a thick dash (e.g.━), a (no change) label following the value.