Acura cars have higher mpg while BMW has more variation in mpg.
From the histograms of mpg distribution for the two makes of car :
- ACURA has most of its values at the center of the distribution with it's tail more conspicuous to the right at a maximum mpg value of 40 and a minimum of about 17.5 to the left.
- BMW on the other hand has its mpg distribution more spread out towards both sides of the distribution, ranging from a minimum of about 3 mpg and to a maximum of about 37.5 mpg.
- Hence, we could infer that, the histogram plot of BMW is more dispersed and hence has greater variation than ACURA.
- Since ACURA has it's peak at the middle, with minimum and maximum mpg values of 17.5 and 40 respectively, which are sufficiently greater than the minimum and maximum mpg values of BMW (3.0 and 37.5 respectively). Then we can conclude that ACURA has greater mpg.
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The phrases that describes the relationship between heart rate and daily intake of caffeine are:
- positive correlation
- increasing heart rate
<h3>What is Positive Correlation?</h3>
- Positive correlation can be described as a relationship whereby two variables move towards the same direction, that is, when one increases the other also increases and vice versa.
- Two variables that are positively correlated will tend to move in the same direction.
Thus, caffeine intake has been highlighted to affecting the heart rate of regular consumers.
Therefore, the phrases that describes the relationship between heart rate and daily intake of caffeine are:
- positive correlation
- increasing heart rate
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B) because the more undevelopped our community is the less our rights are reserved
Answer:
The main idea behind MADs is that they use the principle that metallic objects (submarines) interfere in the magnetic lines of Earth forces. And this equipment detects this anomaly. Submarines, among many metallic things, can be detected by using MADs.
The history of MAD development
MADs are Magnetic Anomaly Detectors. Their function is to detect anomalies in the Earth’s magnetic field caused by submarines.
Submarines are made of ferrous metal which contains domains that are tiny magnets formed of iron molecules. This material creates a disturbance that can be detected in the magnetic field.
In 1917 the interest in the detection of submarines started with the study of hydrophones. Then in 1918, the U.S. considered using magnetism in this area but it did not result to be practical as it had a limited detection range. Then by 1941, Britain and the U.S. developed magnetic detection devices to measure Earth’s magnetic field, so after that in 1943, MADs were installed in ASW aircrafts. Due to the limited range and its lack of ability to detect the magnetic variance from different sources, MAD started to be used in combination with sonobuoys (a portmanteau of sonar and buoy). This combination allowed an aircraft to detect submarines with the confirmation of sonobuoys. To reduce the interference from electrical equipment or metal in the aircraft, the MAD sensor is placed at the end of an aerodynamic device. Even so, a submarine must be very near the aircraft's position and close to the sea surface for detection of the anomaly, because magnetic fields decrease over distance.
Besides the use of finding submarines, MADs are used by geologists and geophysicists for determining the distribution and concentration of magnetic minerals and mineral deposits.
Explanation:
