Answer: The city's mayor presides over the aldermen, who represent the people at a city or county level. Aldermen are elected by the residents of a district. Much like congressmen, aldermen represent the people who elect them and aim to do what's in the residents' best interest.
Lewis and Clark are the people that Jefferson sent on the expedition of the west of the Mississippi River in 1804
Variance in a behavior that is related to variables that an investigator is investigating is systematic variance.
What is variance?
A measurement of variability for the standard deviation of scores from the mean.
What is systematic variation?
The term "systematic variation" typically refers to an anomaly or error in observations that are caused by variables that are outside the scope of statistical control.
Which measure of central tendency is used most often?
When your data distribution is continuous and symmetrical, such as when your data are normally distributed, the mean is typically the best measure of central tendency to utilize.
Learn more about Variation: brainly.com/question/13091634
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Answer:
The answer is d) post-traumatic stress disorder.
Explanation:
Post-traumatic stress disorder is a mental condition characterised by disturbing ideas and nightmares which appear suddenly, often as a result of traumatic experiences such as war, tragic accidents or abuse.
This disorder can lead to suicidal thoughts and a constant feeling of distress. The symtpoms can be treated with therapy and antidepressants.
