What conclusion can be derived by comparing the central tendencies of the two data sets?

a: {7, 6, 3, 1, 6, 2, 4, 6, 3, 5}

b: {2, 2, 2, 3, 4, 5, 2, 8, 7, 6}

a.
the mean of set a is smaller than the mean of set b.

b.
the median of set a is greater than the median of set b.

c.
the median and the mean of set b are greater than those of set a.

d.
the mode of set b is greater than the mode of set a.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever