Question

help

Your colleague surveyed a sample of 50 people and asked them whether they are white (W) or nonwhite (N), and how many hours of they spend on social media in the average week. She also asked them to tell her whether they perceive themselves as being in the upper (U), middle (M), working (W), or lower (L) class and how many years of education they have. Her survey resulted in the raw data presented in the table below Case Race Class Years of education Hours on social media L 12 14 3 12 4 10 16 5 L 10 9 6 W 16 7 w 14 8 M 19 9 16 7 10 N W 14 5 11 11 6 12 13 M 17 W 15 0 14 W м 16 10 15 W 13 9 16 13 14 17 N W 13 18 M 14 7 19 W M 15 15 8 20 w M 8 21 12 9 22 W W 12 23 W W 16 10 24 14 14 25 L 13 26 W U 16 7 27 W 12 14 6 28 W 15 29 15 30 31 32 W W 16 12 20 12 17 U 14 12 N L 10 33 34 16 M 14 12 13 15 7 W 35 7 M W 36 6 W 37 16 W 38 1 12 16 16 15 M 39 U W 40 12 16 41 14 M W 42 7 16 43 10 2 18 M N 44 13 W W 45 14 0 16 W 46 16 M 10 47 14 W 10 48 16 W 18 16 49 W 50 -

Answer 1

a.

Race:: White = 29, Non-white = 21.

Social Class :: Lower = 4, Working = 19, Middle = 22, Upper = 5.

Years of Education :: 10 = 2, 11 = 1, 12 = 8, 13 = 6, 14 = 8, 15 = 6, 16 = 15, 17 = 2, 18 = 1, 19 = 1.

Hours on social media :: 0 = 5, 1 = 2, 2 = 2, 5 = 3, 6 = 3, 7 = 7, 8 = 5, 9 = 4, 10 = 6, 12 = 3, 14 = 5, 15 = 1, 16 = 2, 18 = 1, 20 = 1

b.

Race	Freq	Cf	Rel.Freq (%)	Cum.Rel.Freq (%)
W	29	29	58	58
N	21	50	42	100
Total	50

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Social Class	Freq	Cf	Rel.Freq (%)	Cum.Rel.Freq (%)
L	4	4	8	8
W	19	23	38	46
M	22	45	44	90
U	5	50	10	100
Total=	50

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Education Intervals	Freq	Cf	Rel.Freq (%)	Cum.Rel.Freq (%)
[10,11]	3	3	6	6
[12,13]	14	17	28	34
[14,15]	14	31	28	62
[16,17]	17	48	34	96
[18,19]	2	50	4	100
Total =	50

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Hrs. Intervals	Freq	Cf	Rel.Freq (%)	Cum.Rel.Freq (%)
[0,5]	12	12	24	24
[6,10]	25	37	50	74
[11,15]	9	46	18	92
[16,20]	4	50	8	100
Total =	50

c.

From the third table we can see in the cumulative relative frequency column the (%)ge of 13 years or less education as 34%

d.

From the fourth table cumulative relative frequency column we can see 74% of the respondents spent less than 11 hours. Hence (100 - 74) = 26% of the respondent spent 11 hours or more.