Answer:
Scaffolding.
Explanation:
Scaffolding is done when a student is provided with enough support to complete a task until competence is achieved. Support is gradually decreased until the student becomes able to work independently.
The correct answer is letter A
On the morning of January 24, 1848, carpenter James Wilson Marshall and his staff worked on the construction of a sawmill at John Sutter's ranch in the Sierra Nevada region of central California. Marshall had to bypass a stream to install the saw, moved by the force of the water. When he looked at the muddy bed of the Americans' river, something caught his eye: there was something shining there in the sunlight. It was gold.
The gold that flowed in California was generous. In the first months after the discovery, it was possible to collect the nuggets directly from the soil. Just crouch and pick it up. The precious metal was found in riverbeds and in ravines that flow. Mexican Antonio Franco Coronel, for example, left the job of teaching in Los Angeles and in three days of mining collected 4.2 kg of gold.
The reason for the establishment is <span> Colonists fled Massachusetts in search of better farmland.
The agricultural sector in massachusetts region could not be well developed because of the poor soil condition on that region. The rhode island region on the other hands, had a highly nutritious soil and perfect temperature for agricultural plants.</span>
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.
