mean calculations

In order to find the mean weight of elephants in a zoo, the weights of all the elephants were measured and the mean calculated. State which of the statements is true. => The group of elephants chosen represents the population for this study. or The group of elephants c..

For a sample mean of 35.3, and a given standard deviation the 95% confidence interval for a population mean was calculated as 33.894 < μ < 36.316. Which is the correct representation after rounding the values? => 33.894 < μ < 36.316 or 33.89 < μ..

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 th..

The root mean square speed is expressed by the relationship, The root mean square speed is commonly used and can be calculated from the following relations:..

A researcher was interested in the effects of hunger on how fast a rat will run to different kinds of rewards. There are two levels of hunger (hungry and not hungry) and two kinds of rewards (food, water). Write the degrees of freedom for the (i) variables, (ii) interaction, (iii) within (error). h..

In the discrete series, when deviations are taken from actual mean, the formula is: ..

The table shows the number of fruits sold at a fruit store on seven consecutive days. Using the table, calculate the mean number of fruits sold per day. Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7 Fruits sold 9 12 15 18 24 6 21 => 14 or 16 or 15 or 13..

95% confidence interval of a population mean(μ) with a sample size of 60 was found out as 14.5 < μ < 17.6. Another study calculated the 95% confidence interval as 14.3 < μ < 17.8. Which among the following can be the possible sample size of the second study?..

In this series too deviations may be taken either from the actual mean or from standard mean. The calculations will be simplified if the deviation are taken from assumed mean..

Standard Deviation for continuous series - In this series too deviations may be taken either from the actual mean or from standard mean. The calculations will be simplified if the deviation are taken from assumed mean..