Which of the following is the best description for the data set below?
1, 1, 2, 2, 2, 2, 3, 3, 7, 7, 8, 8, 8, 8, 9, 9
Uniform
Right-skewed
Bimodal
Left-skewed
Correct Answer : C
To solve this problem, we need to find the mean, mode, and median of the above data set.
From the data set, the mode of the data is 2 and 8. They are the most occurring elements in the data set.
The mean of data is the total divided by the number of elements
Total=1+ 1 + 2+ 2+ 2+ 2+ 3 +3+ 7+ 7+8+8+ 8+ 8+ 9+9=80
Number of elements=16
Mean=80/16=5
Median will fall in between the (N/2)th and (N/2+1)th position
(N/2)th =16/2 =8th position and (16/2+1)th =9th position
Since the data is arranged in ascending order as below
1, 1, 2, 2, 2, 2, 3, 3, 7, 7, 8, 8, 8, 8, 9, 9
Element in 8th position = 3
Element in 9th position =7
So the median average of the two elements=(3+7)/2=5
Now the data could be presented as follows in the distribution curve
This is because the data set has two modes, meaning the data is bimodal.
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Related Questions
Correct Answer is C
Explanation
To find the area of the largest circle that fits in the rectangle, we need to determine the area of a circle with a diameter of 8 cm or less to fit on the rectangle with the given measurements as illustrated below.
Area of circle= πr2
Radius of circle, r=8cm/2=4cm
Then, area of the largest circle is:
Area of circle= π*4 cm *4 cm =16π cm2
Correct Answer is B
Explanation
Number of boxes in the room is equal to the volume of the room divided by the volume of one box
Volume of the room=9 ft*9 ft*9 ft= 729 ft3
Volume of one box = 2 ft* 2 ft * 2 ft= 8 ft3
Number of boxes= 729 ft3/ 8 ft3= 91.125 boxes
Thus, the room can store 91.125 boxes, which is about 91 boxes.
However, the room’s dimensions are 9 ft x 9 ft x 9 ft, and the boxes are 2 ft x 2 ft x 2 ft. To determine how many boxes fit along each dimension:
- In the 9 ft length, you can fit\(\frac{9}{2} = 4.5\) boxes, which means only 4 whole boxes fit along this dimension.
- In the 9 ft width, you can fit 4 whole boxes.
- In the 9 ft height, you can fit 4 whole boxes.
Therefore, the total number of boxes that fit is:
\(4×4×4=64\ boxes\)
Correct Answer is A
Explanation
To find a solution to this, we need to find the change in spending between the year 2013 and 2015 for each country. Change is difference in amount spent in 2015 and 2013 for each country:
Sudan=$(24-17)= $7
Eritrea=$(42-56)= - $14
Nigeria = $(21-16)= $5
Tanzania =$(81-68) = $13
Rwanda = $(24-27) =-$3
Kenya = $(88-81) = $8
A Minus sign means a decrease in spending. From the above calculations, Eritrea had the GREATEST change in dollars spent while Rwanda had the LEAST change in dollars spent.
Correct Answer is C
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
Correct Answer is B
Explanation
100% represents total students four allied health program. Thus, 100%=800 students, and 19% joins respiratory care program is
Thus, 152 students joined the respiratory care program.
Correct Answer is A
Explanation
Yoghurt: toppings=4:3
Yoghurt: 4.5 oz =4:3
We convert the given ratio into a proportion equation as below
Multiply both sides by 4.5 oz
Correct Answer is B
Explanation
Standard interior doors typically range from0.7 to 0.9 metersin width and 2.0 to 2.1 meters in height. Thus, the average width of the doorway is about 1.0 m.
Correct Answer is D
Explanation
The most likely weight of pencil is 25 g, because a pencil is a lighter object which is measured in grams.
Correct Answer is C
Explanation
In this case, we are measuring average weight of the babies with time. The weight of the babies will vary with time, meaning when we vary time, the average weight of the babies will be different. Here, time is independent while average weight is dependent variable.
Correct Answer is B
Explanation
First convert 31% to a decimal before working on the problem
31%=31/100=0.31
Thus, 31% of 426=0.31*426=132.06
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