Answer:
in the western region of Africa and south of Sahara desert, near the Niger river.
Face to face survey
The researcher or interviewee can establish rapport and dig into complex issues. The best form of face to face survey is called a focus group.
<span>Students with big smiles had the
longest lifespan, followed by those with partial smiles, and then by those with
no smiles.</span>
An examination by specialists at Wayne College in Michigan,
America proved that being happy can extend your life span. They arrived at
their decisions by examining 230 pictures of baseball players from the 1952
baseball enroll. Of the 184 players who
had since passed away, those in the "no grin" area experienced a
normal of 72.9 years while the "incomplete grin" bunch lived to
around the age of 75.
Those with the most stretched out smiles experienced a
normal of 79.9 years – an entire seven a greater number of years than their
gloomy partners.
<span>MEAN. As the distribution becomes more skewed the mean and the median move away from the mode. With extremely skewed distributions the mean will be somewhat misleading as a measure if central tendency, because it is highly influenced by extreme scores.</span>
