Question

Consider the following data representing the price of laptop computers (in dollars).

14521452, 13791379, 14011401, 14751475, 13261326, 13191319, 13131313, 13891389, 14901490, 12201220, 13801380, 11521152, 11561156, 12671267, 12751275, 14561456, 12131213, 12281228, 10971097, 13031303, 13281328

Copy Data

Price of Laptop Computers (in Dollars)

Class	Frequency	Class Boundaries	Midpoint	Relative Frequency	Cumulative Frequency
1074–11431074–1143
1144–12131144–1213
1214–12831214–1283
1284–13531284–1353
1354–14231354–1423
1424–14931424–1493

Step 6 of 7 :  

Calculate the relative frequency of the first class. Determine your answer as a simplified fraction.

Answer 1

Solution:

Given that,

Class	Frequency		Midpoint	Relative Frequency	Cumulative Frequency
1074–11431074–1143	1	1073.5 - 1143.5	1108.5	1 /21 = 0.05	1
1144–12131144–1213	3	1143.5 - 1213.5	1178.5	3 /21 = 0.14	1 + 3 = 4
1214–12831214–1283	4	1213.5 - 1283.5	1248.5	4 / 21 =0.19	4 + 4= 8
1284–13531284–1353	5	1283.5 - 1353.5	1318.5	5 / 21 = 0.24	8 + 5 = 13
1354–14231354–1423	4	1353.5 - 1423.5	1388.5	4/21 = 0.19	13 + 4 = 17
1424–14931424–1493	4	1423.5 - 1493.5	1459	4 21 = 0.19	17 + 4 = 21