Connotative meaning is the emotion expressed from hearing a certain word, so based on other people’s experiences, beliefs, etc. a word may carry a different connotation to then in opposition to others.
Ex- ‘dog’ may carry the positive connotation for “adorable” to some people, while for others it carries the negative connotation of “vicious” because the person was bit by a dog in the past
In a bar graph you can put in the Y axis the percentage from 0 to 100 and you just put the states in the X axis, this way you can make a visual representation of the differences on the populations ages in the different states of the United States.