Question

1. the two - way frequency table shows the number of social media contacts for 7th - and 8th - graders.

	7th	8th	total
300 +	61	90	151
total	155	145	300

complete the column two - way relative frequency table.

	7th	8th	total
300 +	39%	62%	50%
total	100%	100%	100%

Explanation:

Step1: Calculate 8th grade 0-300%

$\frac{55}{145} \approx 0.38 = 38\%$

Step2: Calculate 7th grade 300+%

$\frac{61}{155} = 0.39 = 39\%$

Step3: Fill total rows

Each column total is 100%

Answer:

	7th	8th	Total
300 +	39%	62%	50%
Total	100%	100%	100%