Question

345bata 4: Practice Problems1.These two histograms show the number of text messages sent in one week by two groups of 100students. The first histogram summarizes data from sixth-grade students. The second histogramsummarizes data from seventh-grade students.2520151051554555 6585 95 105 115 125 135 145text messages sent per week by sixth-grade studentsk

Answer 1

a. The two data do not have the same center

For the sixth-grade students,

$\text{Mode }\approx\text{ 90}$

For the seventh-grade students,

$\text{Mode }\approx\text{ 10}2$

Hence, the seventh grade is higher than the sixth grade.

b. The greater spread:

For the sixth grade:

$\text{Spread = 5}$

For the seventh grade:

$\text{Spread = }7$

Hence, the spread for the seventh grade is higher

c. Overall, the students for the seventh grade sent more text messages