What is an equation of the parabola with vertex at the origin and focus (-5, 0)?
David wants to survey his friends about their favorite animal. He distributes the following survey. Is this an appropriate survey for David to use?
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1 point
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Yes, with this survey David can tell what his friends’ favorite animals are.
Yes, even though this survey doesn’t show what other types of animals students like, it does show how many students at the school like dogs.
No, this survey only shows student results using one type of data display.
No, this survey encourages students to choose dogs as their favorite animal and doesn’t allow them to choose another type of animal.
Option 5
No, this survey encourages students to choose dogs as their favorite animal and doesn’t allow them to choose another type of animal.
The survey only offers the option to choose dogs, which could bias the results and not accurately represent his friends' favorite animals.
Jake recorded the average temperatures for his hometown over a period of 20 days as shown in the chart. He used the data to determine the mean temperature. In a report, he stated, “The typical temperature in my hometown is about 61°.”
How is this statement misleading?
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1 point
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There is not enough data to decide what the typical temperature is.
The mean of the data is not about 61°.
The mean is not a good measure of the typical temperature because a few higher temperatures pull the mean higher than most of the daily temperatures.
The mean is not misleading. The typical temperature is about 61°.
The mean is not a good measure of the typical temperature because a few higher temperatures pull the mean higher than most of the daily temperatures.
The statement is misleading because the mean temperature is not a good measure of the typical temperature. The data shows a range of temperatures, and the mean is pulled higher by a few higher temperatures, which do not represent the typical temperature experienced over the 20-day period. Therefore, it is not accurate to state that the typical temperature in his hometown is about 61° based only on the mean temperature.
The record high temperatures were recorded for 20 states. The frequency table below displays the data. Which histogram represents the data?
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1 point
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Option 1
Option 2
Option 3
Option 4
Option 5
Unfortunately, the frequency table is not provided. Please provide the necessary information or table to select the appropriate histogram.
Which display is best to determine the relationship between the number of hours worked and the amount of money paid?
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1 point
histogram with intervals of 5
histogram with intervals of 3
line plot
line graph
line graph
A line graph is the best display to determine the relationship between the number of hours worked and the amount of money paid, as it allows for a continuous representation of the data over time. The x-axis can represent the number of hours worked, while the y-axis can represent the amount of money paid. This type of display shows the trend or pattern between the two variables, making it easier to analyze the relationship and make predictions based on the data. Histograms and line plots are better for displaying frequencies and individual data points, respectively.
Carrie asked 50 randomly selected middle school students at King’s High School about their favorite fast food item. Twenty-one selected french fries. If there are 350 middle school students at King’s High School, estimate how many will select french fries as their favorite fast food.
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1 point
141
153
147
159
By using proportion, we can estimate how many will select French fries as their favorite fast food:
21/50 = x/350
x = 147
Therefore, an estimated 147 middle school students at King's High School will select French fries as their favorite fast food.
So, the answer is 147.