In it possible and how (it pos sibl e) to avoid random errors? change the device used for measur ing it's need to measure inve atig ated paramete r several ti mes plot data din tribut ion g raph completely random err ors cann ot be avoided

## Step 1<br />The problem is asking for the best method to avoid random errors in measurements. Random errors are those that vary in a random manner and can't be predicted or corrected. They can occur due to a variety of factors such as human error, instrument error, or environmental conditions.<br /><br />## Step 2<br />The options provided are:<br />- Change the device used for measuring<br />- Measure the investigated parameter several times<br />- Use a tributition graph<br />- Random errors cannot be avoided<br /><br />## Step 3<br />The first option, changing the device used for measuring, may not necessarily eliminate random errors. The device could still have inherent errors or the new device could have different errors.<br /><br />## Step 4<br />The second option, measuring the investigated parameter several times, is a common method to reduce random errors. By taking multiple measurements, the average of these measurements can be taken, which can help to cancel out the random errors.<br /><br />## Step 5<br />The third option, using a tributition graph, is not a method to avoid random errors. A tributition graph is a graphical representation of the tributary system, which is not related to the problem of random errors.<br /><br />## Step 6<br />The fourth option, stating that random errors cannot be avoided, is not true. While it is true that random errors cannot be completely eliminated, they can be reduced by taking multiple measurements and averaging the results.