Which of the following is true of histograms? (Check all that apply.)

They are best used with large sets of data.
They are useful when there is a wide range of data.
They show specific values.
They show where data is concentrated.

1:

A - actually not true, a probability plot would be better

B - not true, since exact values are plotted a box-and-whisker would be better

C - true (that's what a histogram does)

D - True (You can get the measures of central tendency quickly)

2:

A - true

B - False - those are easily found

C - False - They are arranged on the x-axis

D - True - see above

first option

a function is a relation in which an input is paired with exactly one output.

so, let's find the right answer.

in our first option, our inputs are january, february, and march. the outputs are 30, 28, and 25. each input has it's own output. this is correct!

our second option we know is incorrect, because ms. valverade has two outputs, dogs and cats. this is not a function.

our third option is incorrect as well. the yellow square has two ouputs, the square and the triangle.

lastly, in our fourth option, we see the number 7 two times with a different output. therefore, this is not a function.

remember: each input must be paired with only one output!

the answers c