deviation value

Mean Deviation of a data value is ______ . => how much it differs from the mode. or sum of all the data values. or range of the given data set. or how much it differs from the mean...

The mean deviation of a statistical data is defined as the arithmetic mean of the numerical values of the deviations of items from some average value. Mean deviation is also known as average deviation . The mean deviation is gene..

The standard deviation of the hemoglobin values (g/100ml) of 10 children is 1.7. Find the 99% confidence interval for the variance and standard deviation. Assume that the variable is normally distributed. => 1.26 < σ 2 < 14.75 ; 1.12 < σ < 3.84 ..

The local authorities in a certain city install 1600 electric lamps in the streets of the city. If the lamps have a mean life rate of 1000 burning hours, with a standard deviations of 150 hours, find the value of - 2 standards deviations form the mean. Assume that the ..

Merits: - Mean deviation is easy to calculate. This measure is simple to understand. This can be calculated from any average. Its value is based upon all the (observations) items of the data. It is less affected by extreme observations. It gives us an idea about how the items ar..

Merits: s is based on every item of the data. s takes care of both positive and negative deviation. Demerits: s is some what not easy to understand. The extreme values unduly affect s..

When a distribution is bell-shaped, approximately what percentage of data values will fall within 1 standard deviation of the mean? I. 95% II. 99.7% III. 68% => only III or only I or only II or all are correct..

The mean number of males and females in 40 classrooms of a school are 25 and 22 with the standard deviations 12.2 and 15.6 respectively. Do the mean values differ at 98% and 95% confidence levels? => do not differ at 95% and also at 98% or do not differ at 98%, differ at 95% or ..

A property value assessor has appraised that the average value of 600 houses in an area was $250,000 and the standard deviation was $80,000. If 50 houses are marked for sale, then find the probability that the mean of the values of these houses is greater tha..

The standard deviation of the scores of 20 students in statistics test is 10 and that of calculus test is 5. Find the F-test value and verify whether the variances for both the tests differ at 90% confidence level. => 2.16, do not differ or 2.54, do not differ or 4, differ or 0...