Construct a frequency distribution for the data

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Reference no: EM132077662

CLASS-WORK

1. Give specific examples of data that might be gathered from each of the following business disciplines and the industry.

Functional Areas :- Accounting, Finance, Production, Marketing,

Industry: Manufacturing, Agriculture, Insurance, Banking, Travel, Healthcare

2. The following is the marks obtained by students in Statistics:-

105	133	127	110	129
118	148	73	87	108
79	103	144	78	98
101	142	98	99	86
94	101	115	79	144
132	136	101	111	88
94	125	110	126	147
80	103	99	107	80
127	138	116	94	123
75	124	106	93	96

a. Construct a frequency distribution for the data using a class interval of ten.

b. Find relative frequencies of each categories.

c. Find Cumulative Frequencies.

d. Construct a Histogram

e. Construct a Frequency Polygon

f. Construct an Ogive

(For question Number 3,4,5,6 find all the measures of central tendency and measures of variation/dispersion)

3. Consider the following data concerning the number of defects being produced by a manufacturing unit

(Median is the value at {(n+1)/2th} observation. Percentile:- P_i^th percentile occurs at {Pi=(i xn)/100} value. (i) in case this value is a whole number then the P_i^thpercentile is the average of the value occurring at the whole number and the next higher whole number. (ii) in case this multiplication is not a whole number then the P_i^thpercentile occurs at the next higher whole number value of data arranged in ascending order)

4. The rain fall (In mm) in Delhi in the first days of the month of June was as follows:-

65.22, 65.45, 66.62, 65.22, 65.22, 63, 67.82, 63, 64.12, 63

5. A random sample of voters in Delhi, is classified by age group, as shown by the following data.

Age Group				Frequency
18	-	under	24	80
24	-	under	30	85
30	-	under	36	89
36	-	under	42	98
42	-	under	48	96
48	-	under	54	93
54	-	under	60	95
60	-	under	66	84
66	-	under	72	78

6. The students were asked to rate " how important is price in choosing a laptop/mobile". The rating was to be given on a scale measuring 1 to 5 with the following annotations

1	2	3	4	5
Highly Unimportant	Unimportant	Neither Important nor Unimportant	Important	Highly Important

The scores obtained from the survey of 50 students is as follows :

PRICE RATING	FREQUENCY (f)
1	65
2	66
3	73
4	78
5	83
TOTAL	n=Σf= 365

Reference no: EM132077662

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