During storytelling, the griots usually involve others by getting others to sing along with the music being played while singing the stories.
<h3>Who are the Griots?</h3>
Griots first appeared in the 13th century in Mali's Mande kingdom. For generations, they have narrated and repeated the empire's past, preserving its myths and traditions. They set their stories to music using instruments like the ngoni, kora, and balafon.
Griots were able to recount everything from births, funerals, and weddings to wars, hunts, and monarch coronations. Some griots could trace each villager's genealogy back centuries. Griots were known to discourse for hours, if not days. This illustrious oral tradition was passed down from griot to griot.
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Cardiopulmonary resuscitation or most commonly referred to as CPR is administered as an emergency procedure and combines chest compression for artificial ventilation. Those who received this before the arrival of the emergency personnel are more likely to survive. Thus, the answer is the second choice.
Answer:
1. Co-variance= -1.2
2. correlation coefficient= -0.4404
3. There is weak negative relationship between x and y.
Explanation:
1.
Co-variance= Cov(x,y)= sum[(x-xbar)(y-ybar)]/n
xbar=sumx/n=32/5=6.4
ybar=sumy/n=35/5=7
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
Cov(x,y)= sum[(x-xbar)(y-ybar)]/n=-6/5=-1.2
Cov(x,y)=-1.2
2.
correlation coefficient=r
x 7 8 5 3 9
x-xbar 0.6 1.6 -1.4 -3.4 2.6
y 7 5 9 7 7
y-ybar 0 -2 2 0 0
(x-xbar)(y-ybar) 0 -3.2 -2.8 0 0
(x-xbar)² 0.36 2.56 1.96 11.56 6.76
(y-ybar)² 0 4 4 0 0
r=-0.4404
3. Since the value of correlation coefficient is negative and less than 0.5 , so, we can say that there is weak negative relationship between x and y.
