A teacher asked all the students in the class which days of the week they get up after 8 a.m. Which of the following is the best way to display the frequency for each day of the week?

A. Histogram

B. Pie graph

C. Bar graph

D. Scatter plot

Answer Explanation:

The best way to display the frequency of each day of the week when students get up after 8 a.m. is by using a bar graph. Bar graphs are well-suited for representing categorical data, where each day of the week is a separate category, and the height of each bar corresponds to the count or frequency of students waking up late on that specific day.

Note: Histograms, on the other hand, are more appropriate for visualizing continuous or numerical data and are not ideal for categorical data like days of the week. Histograms are useful for understanding the distribution of data, identifying patterns, and assessing the shape of the data distribution, such as whether it's normally distributed, skewed, or has multiple modes.

As you can see below, the Histogram is used to depict a pattern/continuous/range data. While a bar graph does just fine even with discrete data.

Therefore, the Correct Answer is C.

Q #1: Which of the following is the mostly likely weight of a pencil?

A. 25 kg

B. 25 cm

C. 25 mg

D. 25 g

Answer Explanation

The most likely weight of pencil is 25 g, because a pencil is a lighter object which is measured in grams.
Q #2: The length of a rectangle is 3 units greater than its width. Which expression would correctly represent the perimeter of the rectangle?

A. 2W+2[W+3]

B. W+W+3

C. W[W+3]

D. 2W+2[3W]

Answer Explanation

Let width of the rectangle be W. We are told that length, L is 3 units greater than width. Then,

L=W+3

And perimeter of the rectangle is given by the relation, P=2(L+W]=2L+2W

In place of L substitute W+3. Thus,

P=2[W+3]+2W
Q #3: Elevation above sea level and temperature are negatively-correlated variables. Which of the following statement describes the relationship between the variables?

A. As elevation decreases, temperature remains the same

B. As elevation decreases, temperature decreases

C. As elevation increases, temperature decreases

D. As elevation increases, temperature increases

Answer Explanation

In a negatively-correlated variables, a change in one variable result in opposite change in the other variable. In other words, an increase in on variable results in a decrease in the other.

Now let’s analyze the given scenarios:

As elevation decreases, temperature remains the same this is NO-CORRELATION

As elevation decreases, temperature decreases is a POSITIVE CORRELATION

As elevation increases, temperature decreases is a NEGATIVE CORRELATION

As elevation increases, temperature increases is a POSITIVE CORRELATION

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A teacher asked all the students in the class which days of the week they get up after 8 a.m. Which of the following is the best way to display the frequency for each day of the week?

More Questions on TEAS 7 Math

Q #1: Which of the following is the mostly likely weight of a pencil?

Answer Explanation

Q #2: The length of a rectangle is 3 units greater than its width. Which expression would correctly represent the perimeter of the rectangle?

Answer Explanation

Q #3: Elevation above sea level and temperature are negatively-correlated variables. Which of the following statement describes the relationship between the variables?

Answer Explanation

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