A graph that uses bars of various heights to represent the frequencies is a <u>Histogram</u>
A histogram is an approximate representation of the distribution of numerical data. The term was first introduced by Karl Pearson. To construct a histogram, the first step is to "bin" (or "bucket") the range of values—that is, divide the entire range of values into a series of intervals—and then count how many values fall into each interval.
Therefore, a graph that uses bars of various heights to represent the frequencies is a <u>Histogram</u>
Answer:

Step-by-step explanation:
To write the quadratic in standard form, begin by writing it in vertex form

Where (h,k) is the vertex of the parabola.
Here the vertex is (-3,-2). Substitute and write:

To find a, substitute one point (x,y) from the parabola into the equation and solve for a. Plug in (0,7) a y-intercept of the parabola.

The vertex form of the equation is
.
To write in standard form, convert vertex form through the distributive property.

Answer:
Part A:
Type of Sampling: Convenience Sampling
It is a non-probability sampling technique. Though it is easy to carry out, it might be biased and can lead to under - representation or over - representation of particular groups within the sample. Since the sampling frame is not known and the sample is not chosen randomly, the inherent bias in convenience sampling means that the sample is unlikely to be representative of the population being studied.
Part B.
The committee can implement this method as follows:
Step 1: Assign Serial Number to each and every student of the total of 2,500 student names.
Step 2:Using Random Number Generator App, obtain 400 Random numbers.
Step 3; The 400 numbers got in Step 2 form the desired Sample of 400 students out of 2,500 students.
Answer:
I don't really get your question. But if you save the same amount each week. The amount of money will be the amount you save each week multiplied by the number of weeks
Answer:
$81.6
Step-by-step explanation:
You multiply 0.2 by 68, in which you will get 13.6, and then you add that to 68.