Table1 shows a frequency distribution of the weekly wages of 65 employees at the P&R Company. Table1 Wages Number of employees X Boundaries 250.00 - 259.99 8 254.995 249.995-259.995 260.00 - 269.99 10 264.995 259.995-269.995 270.00 - 279.99 16 274.995 269.995-279.995 280.00 - 289.99 14 284.995 279.995-289.995 290.00 - 299.99 10 294.995 289.995-299.995 300.00 - 309.99 5 304.995 299.995-309.995 310.00 - 319.99 2 314.995 309.995-319.995 Total 65 With reference to this table, determine: (a) The lower limit of the sixth class. (b) The upper limit of the fourth class. (c) The class mark (or class midpoint) of the third class. (d) The class boundaries of the fifth class. (e) The size of the fifth-class interval. (f) The frequency of the third class. (g) The relative frequency of the third class. (h) The class interval having the largest frequency. This is sometimes called the modal class interval; its frequency is then called the modal class frequency. (i) The percentage employees earning less than $280.00 per week. (j) The percentage employees earning less than $300.00 per week but at least $260.00 per week.
Table1 shows a frequency distribution of the weekly wages of 65 employees at the P&R Company.
Table1
Wages Number of employees X Boundaries
250.00 - 259.99 8 254.995 249.995-259.995
260.00 - 269.99 10 264.995 259.995-269.995
270.00 - 279.99 16 274.995 269.995-279.995
280.00 - 289.99 14 284.995 279.995-289.995
290.00 - 299.99 10 294.995 289.995-299.995
300.00 - 309.99 5 304.995 299.995-309.995
310.00 - 319.99 2 314.995 309.995-319.995
Total 65
With reference to this table, determine:
(a) The lower limit of the sixth class.
(b) The upper limit of the fourth class.
(c) The class mark (or class midpoint) of the third class.
(d) The class boundaries of the fifth class.
(e) The size of the fifth-class interval.
(f) The frequency of the third class.
(g) The relative frequency of the third class.
(h) The class interval having the largest frequency. This is sometimes called the modal class interval; its frequency is then called the modal class frequency.
(i) The percentage employees earning less than $280.00 per week.
(j) The percentage employees earning less than $300.00 per week but at least $260.00 per week.
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