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Question 1 of 9
Create a dot plot using the data set below.
Incorrect
A dot plot is a number line that contains all possible scores from a data set and uses dots to represent frequency.
First, find the highest and the lowest score.
Highest Score |
= |
7 |
Lowest Score |
= |
3 |
Create a number line with with ascending values from the lowest to highest scores
Next, read across the data while placing a dot above the corresponding score.
Continue doing this until all scores are accounted for.
To check, count the total dots and make sure it is equal to the number of given scores, which is 11.
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Question 2 of 9
Create a dot plot using the data set below.
15 |
14 |
14 |
14 |
17 |
15 |
20 |
18 |
17 |
13 |
15 |
23 |
17 |
12 |
14 |
12 |
20 |
Incorrect
A dot plot is a number line that contains all possible scores from a data set and uses dots to represent frequency.
First, find the highest and the lowest score.
Highest Score |
= |
23 |
Lowest Score |
= |
12 |
Create a number line with with ascending values from the lowest to highest scores
Next, read across the data while placing a dot above the corresponding score.
15 |
14 |
14 |
14 |
17 |
15 |
20 |
18 |
17 |
13 |
15 |
23 |
17 |
12 |
14 |
12 |
20 |
Continue doing this until all scores are accounted for.
To check, count the total dots and make sure it is equal to the number of given scores, which is 17.
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Question 3 of 9
Create a dot plot using the data set below.
Country |
Years |
Country |
Years |
Rwanda |
60 |
Albania |
74 |
Senegal |
64 |
Libya |
75 |
Pakistan |
67 |
Colombia |
75 |
Papua New Guinea |
68 |
Bulgaria |
75 |
Nepal |
69 |
Capa Verde |
75 |
North Korea |
69 |
Grenada |
77 |
Iraq |
69 |
Dominica |
78 |
Egypt |
73 |
Iceland |
83 |
Incorrect
A dot plot is a number line that contains all possible scores from a data set and uses dots to represent frequency.
First, find the highest and the lowest score.
Highest Score |
= |
83 |
Lowest Score |
= |
60 |
Create a number line with with ascending values from the lowest to highest scores
Next, read across the data while placing a dot above the corresponding score.
Country |
Years |
Country |
Years |
Rwanda |
60 |
Albania |
74 |
Senegal |
64 |
Libya |
75 |
Pakistan |
67 |
Colombia |
75 |
Papua New Guinea |
68 |
Bulgaria |
75 |
Nepal |
69 |
Capa Verde |
75 |
North Korea |
69 |
Grenada |
77 |
Iraq |
69 |
Dominica |
78 |
Egypt |
73 |
Iceland |
83 |
Continue doing this until all scores are accounted for.
To check, count the total dots and make sure it is equal to the number of given scores, which is 16.
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Question 4 of 9
The scores for a game are represented on the dot plot below. Find the mode.
Incorrect
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The mode of a data set is the value with the highest frequency
The mode of a dot plot is represented by the score with the most dots.
We can see that the score 7 has 6 dots, and is the most frequent score on the dot plot.
Therefore, the mode for this data set is 7
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Question 5 of 9
Find the mode of the dot plot below.
Incorrect
The mode of a data set is the value with the highest frequency
The mode of a dot plot is represented by the score with the most dots.
We can see that the score 7 has 5 dots, and is the most frequent score on the dot plot.
Therefore, the mode for this data set is 7
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Question 6 of 9
The scores for a game are represented on the dot plot below. Find the range.
Incorrect
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Remember
The range of a data set is simply the difference between the largest and smallest values.
First, find the highest and the lowest score on the dot plot. Both points must have dots.
Highest Score |
= |
11 |
Lowest Score |
= |
3 |
Finally, subtract the lowest score from the highest score to get the range
Range |
= |
Highest Score-Lowest Score |
Finding the range |
|
= |
11-3 |
Substitute values |
|
= |
8 |
Evaluate |
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Question 7 of 9
Find the median of the dot plot below.
Incorrect
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The median is the middle value in an ordered set of data.
Take note that there is a total of 20 scores on the dot plot, which is an even number.
Therefore, the median of the data set will be the average of the scores on the 10th and 11th positions.
Median |
= |
11+112 |
|
|
= |
222 |
|
|
= |
11 |
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Question 8 of 9
Find the median of the dot plot below.
Incorrect
The median is the middle value in an ordered set of data.
Take note that there is a total of 17 scores on the dot plot, which is an odd number.
Therefore, the median of the data set will be the score on the 9th position.
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Question 9 of 9
Find the mean of the dot plot below.
Round your answer to two decimal places
Incorrect
Remember
∑x is the sum of all the given values.
N is the number of given values.
First, solve for the sum of the given values.
The number of dots on a value indicates how many times a score occurs on the data set.
∑x |
= |
1+(2×7)+(3×2)+5 |
|
= |
26 |
Next, divide the sum of all values (∑x) by the number of values (N).
Mean |
= |
∑xN |
Finding the mean |
|
|
= |
2611 |
There are 11 given values |
|
|
= |
2.36 |
Rounded to two decimal places |