By being able to assionate the president of the 1942 and 1943 russians.
Explanation:
✰ Range : It is the simplest method or measuring the variations. A range is defined as the difference between the largest and the smallest value of distribution. If the data are arranged in ascending or descending order , then the difference between the largest and smallest values is called the range. The range is defined by :
![\boxed{\large{ \sf{Range = \: Largest \: value \: ( \: L\: ) \: - \: Smallest \: value \: ( \: S \: )}}}](https://tex.z-dn.net/?f=%20%20%5Cboxed%7B%5Clarge%7B%20%5Csf%7BRange%20%3D%20%20%5C%3A%20Largest%20%5C%3A%20value%20%5C%3A%20%28%20%5C%3A%20L%5C%3A%20%29%20%5C%3A%20%20-%20%20%5C%3A%20Smallest%20%5C%3A%20value%20%5C%3A%20%28%20%5C%3A%20S%20%5C%3A%20%29%7D%7D%7D)
In our case, the largest value is 21 & smallest value is 13. Plug the values :
⇢ ![\large{ \tt{21 - 15}}](https://tex.z-dn.net/?f=%20%5Clarge%7B%20%5Ctt%7B21%20-%2015%7D%7D)
⇢ ![\boxed{ \boxed{\large{ \tt{6}}}}](https://tex.z-dn.net/?f=%20%20%5Cboxed%7B%20%5Cboxed%7B%5Clarge%7B%20%5Ctt%7B6%7D%7D%7D%7D)
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Based on the information given to evaluate his progress towards his goal he should begin to save.
<h3>Achieving goals:</h3>
Since the deadline is in six months, for him to be on track to reach his goal he should save.
Kyle should begin to save at least $140 per month for six months so as to reach his goal which is to buy a new video camera as he would have saved $840 ($140×6 months).
In a situation where he fail to save or where he save amount that is less than $140 or $110 for six months he wont be able to achieve or reach his goals as he would have save only $660 ($110×6 months).
Inconclusion to evaluate his progress towards his goal he should begin to save.
Learn more about achieving goals here:brainly.com/question/1512442