The traffic engineer for a large city is conducting a study on traffic flow at a certain intersection near the city administration building. The engineer will collect data on different variables related to the intersection each day for ten days. Of the following variables, which will be measured using continuous data?
E?
The number of cars passing through the intersection in one hour
A
The number of pedestrians crossing the intersection in one hour
B
The number of bicyclists crossing the intersection in one hour
C
The number of food trucks that park within four blocks of the intersection
D
The number of minutes for a car to get from the intersection to the administration building E
The following dotplot shows the number of strokes taken by 20 professional golfers competing at an 18-hole golf course.
The figure presents a dotplot titled Number of Strokes, and the numbers 62 through 70 are indicated, in increments of 1. The dotplot contains 20 data points. The data are as follows. 62 strokes, 0 golfers. 63 strokes, 0 golfers. 64 strokes, 2 golfers. 65 strokes, 4 golfers. 66 strokes, 2 golfers. 67 strokes, 6 golfers. 68 strokes, 3 golfers. 69 strokes, 3 golfers. 70 strokes, 0 golfers.
Which of the following best describes the type of variable represented in the dotplot?
A??
Quantitative and discrete
A
Quantitative and continuous
B
Categorical and discrete
C
Categorical and continuous
D
Quantitative and categorical
E
The figure presents a histogram. The horizontal axis is labeled Tree Diameter, in centimeters, and the numbers 0 through 55, in increments of 5, are indicated. The vertical axis is labeled Frequency, and the numbers 0 through 30, in increments of 5, are indicated. The data represented in the histogram are as follows. Note that all values are approximate. 0 through 5 centimeters, 4. 5 through 10 centimeters, 20. 10 through 15 centimeters, 27. 15 through 20 centimeters, 22. 20 through 25 centimeters, 6. 25 through 30 centimeters, 0. 30 through 35 centimeters, 0. 35 through 40 centimeters, 0. 40 through 45 centimeters, 4. 45 through 50 centimeters, 10. 50 through 55 centimeters, 6.
Which of the following is the best description of the distribution?
A? there is two clusters on each side with a gap between 25-40, but would that be the best terminology or would it be a right skew?
The distribution consists of two clusters and a gap.
A
The distribution is approximately normal.
B
The distribution is symmetric with a skew to the right.
C
The distribution is skewed to the left.
D
The distribution is uniform.
E
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asked by Anonymous
yesterday at 10:26pm
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though.
What are your choices?
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posted by PsyDAG
today at 2:13pm
I put my choices in the original question above right below the each of the questions, but they must not be noticeable enough. Anyways, 1. E 2. A 3. A
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posted by Anonymous
today at 8:42pm
https://www.jiskha.com/questions/1801714/The-traffic-engineer-for-a-large-city-is-conducting-a-study-on-traffic-flow-at-a
1. The variable "The number of cars passing through the intersection in one hour" will be measured using continuous data.
Explanation: Continuous data represents measurements that can take on any value within a specified range. In this case, the number of cars passing through the intersection can take on any value, such as 1.5 cars or 2.3 cars, which makes it continuous.
2. The variable represented in the dotplot is "Quantitative and discrete."
Explanation: Quantitative variables represent quantities or measurements, and discrete variables can only take on certain values, typically whole numbers. In this case, the variable is the number of strokes taken by professional golfers, which is a quantitative variable. The dotplot shows the frequencies for each value (number of strokes), indicating that it is discrete.
3. The best description of the distribution represented in the histogram is "The distribution consists of two clusters and a gap."
Explanation: When analyzing a histogram, we look for patterns and characteristics in the shape. In this case, the histogram shows two distinct peaks or clusters with a gap between 25 and 40 centimeters. This suggests that the data can be divided into two groups or categories, indicating a bimodal distribution.