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The following frequency distribution reports the electricity cost for the sample of the two bedroorms apartments...
Please also with explenations. Problem 1. The following frequency distribution reports the electric- ity cost for...
Please also with
explenations.
Problem 1. The following frequency distribution reports the electric- ity cost for a population of 50 two-bedroom appartments in a certain area of Albuquerque, New Mexico during the month of May Electricity cost Mid point Frequency 80 up to 100 100 up to 120 120 up to 140 140 up to 160 160 up to 180 180 up to 200 90 12 16 a) Give the general formula for the arithmetic mean of a data set...
The table below contains data about the cost of electricity during a recent month for a...
The table below contains data about the cost of electricity during a recent month for a random sample of 30 one-bedroom apartments in a large city. Complete parts (a) through (c) below. 94 161 139 94 109 174 185 149 164 124 198 90 205 147 182 177 117 177 159 153 147 174 122 129 114 102 110 128 141 135 a. Construct a frequency distribution and a percentage distribution that have class intervals with the upper class...
a sample of 480 teachers spent for their classes $ AMOUNT FREQUENCY 100-120 10 120-140 30...
a sample of 480 teachers spent for their classes $ AMOUNT FREQUENCY 100-120 10 120-140 30 140-160 80 160-180 120 180-200 150 200-220 70 220-240 20 Estimate the mean and the standard deviation interpret the mean and standard deviation for this study
1. A researcher has collected the below data on the cost of electricity during a recent...
1. A researcher has collected the below data on the cost of electricity during a recent month from a random sample of 30 one-bedroom apartments in a large city: 95 163 142 94 109 172 181 149 164 123 205 90 205 152 187 178 118 177 160 152 149 171 125 131 116 102 111 126 146 134 A. Construct a frequency distribution table and a percentage distribution table that have class intervals with the upper class boundaries of...
Question 5 The following table gives the frequency distribution of the amounts of telephone bills for...
Question 5 The following table gives the frequency distribution of the amounts of telephone bills for August 2012 for a sample of 50 families. Amount of Telephone Bill (dollars) 40 to less than 70 70 to less than 100 100 to less than 130 130 to less than 160 160 to less than 190 Number of Families 12 10 16 Calculate the mean, variance, and standard deviation Round your answers to two decimal places. Mean Variance Standard deviation-$
Forty-two cities provided information on vacancy rates (in percent) for local apartments in the following frequency...
Forty-two cities provided information on vacancy rates (in percent) for local apartments in the following frequency distribution. Vacancy Rate (in percent) Frequency 0 up to 3 9 3 up to 6 5 6 up to 9 10 9 up to 12 6 12 up to 15 12 b. Calculate the variance and the standard deviation for this sample. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)
Question 2 The following frequency distribution presents the weights in pound (lb) of a sample of...
Question 2 The following frequency distribution presents the weights in pound (lb) of a sample of visitors to a health clinic. Weight (lb) Frequency 90-99 1 100-109 4 110-119 4 120-129 3 130-139 7 140-149 6 4 150-159 160-169 2 a) What is the class width? b) What is the mid-point of second class? c) What is the upper class boundary for third class?
Corn plants from a test plot are measured, and the distribution of heights at 10-cm intervals...
Corn plants from a test plot are measured, and the distribution of heights at 10-cm intervals is recorded in the following table: Height (cm) Plants (no.) 100 40 110 60 120 90 130 130 140 200 150 120 160 80 170 50 180 20 Calculate the mean height & Calculate the variance Recall that the mean is calculated as ∑Xin where ∑Xi represents the sum of all individual values in the sample, and n is the number of individual values....
Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam...
Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam scores in a statistics class. If necessary, round to one more decimal place than the largest number of decimal places given In the data Final Exam Scores Class Frequency 51 60 6170 71-80 5 81-90 91 100 5 10
The frequency distribution below shows the amount ($) spent on entertainment per week by a sample...
The frequency distribution below shows the amount ($) spent on entertainment per week by a sample of people. Weekly Entertainment Cost ($) Number of People 80 < X ≤ 90 2 90 < X ≤ 100 7 100 < X ≤ 110 13 110 < X ≤ 120 8 120 < X ≤ 130 5 The relative frequency for the class 90 < X ≤ 100 is: (round to two decimal places) a. 0.20 b. 0.68 c. 0.26 d. 0.70
Please also with
explenations.
Problem 1. The following frequency distribution reports the electric- ity cost for a population of 50 two-bedroom appartments in a certain area of Albuquerque, New Mexico during the month of May Electricity cost Mid point Frequency 80 up to 100 100 up to 120 120 up to 140 140 up to 160 160 up to 180 180 up to 200 90 12 16 a) Give the general formula for the arithmetic mean of a data set...
Question 5 The following table gives the frequency distribution of the amounts of telephone bills for August 2012 for a sample of 50 families. Amount of Telephone Bill (dollars) 40 to less than 70 70 to less than 100 100 to less than 130 130 to less than 160 160 to less than 190 Number of Families 12 10 16 Calculate the mean, variance, and standard deviation Round your answers to two decimal places. Mean Variance Standard deviation-$
Question 2 The following frequency distribution presents the weights in pound (lb) of a sample of visitors to a health clinic. Weight (lb) Frequency 90-99 1 100-109 4 110-119 4 120-129 3 130-139 7 140-149 6 4 150-159 160-169 2 a) What is the class width? b) What is the mid-point of second class? c) What is the upper class boundary for third class?
Calculate the sample standard deviation and sample variance for the following frequency distribution of final exam scores in a statistics class. If necessary, round to one more decimal place than the largest number of decimal places given In the data Final Exam Scores Class Frequency 51 60 6170 71-80 5 81-90 91 100 5 10
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