Any quantity that is computed from a sample is called

Why must the sum of all fs in a sample equal N?

A population of grades for a statistics class of six students is given below:   71,63,68,80,85,82   Find the variance for this population. Population Variance =

State the mean and variance of the sampling distribution of the mean?

1. Explain the differences between a sample and a population.

Data was collected for 310 randomly selected 10 minute intervals. For each ten-minute interval, the number of people entering the atrium of a large mall were recorded. The data is summarized in the table below. Number of Guests 200-209 210-219 220-229 230-239 240-249 Frequency Class width= 95 58 19 95 43 What is the class width for this GFDT?

The number of car sales made per week for each car salesman of a company is listed below: 1, 1, 3, 4, 5, 6, 6, 6, 7, 8, 9 Calculate the median number of car sales for an employee. O 7 sales 5.5 sales O 5 sales 6 sales A circular pool is 16 feet in diameter and 48 inches deep. How many liters would it take to fill the pool? There's 0.001 cubic meters in one liter, and one inch equals 2.54 centimeters O 936.09 liters O 264.27 liters O 35469.10 liters 22773.81 liters

is statistics used to infer the results based on a sample to a population. *

Workers at a private business was given a grade (A, B, C) based on their yearly performance. The data was recorded along with the department they belong. The results obtained using MINITAB are xpected counts are printed below observed counts Total 12 8. Accounting (12.960) (7.830) (6.210) 17 10 8. Sales (16.800) (10.150) (8.050) 35 19 11 8. Marketing (18.240) (**) (8.740) 38 Total 48 29 23 100 Chi-sq = 0.0711 + 0.0037 + 0.1005 + %3D 0.0024 + 0.0022 + 0.0003 + 0.0317 + 0.0000 + *** =0.2746 %3D DF = ??, p-value = ??? a) Carefully define the null and alternative hypotheses of the x2 test of the above table. b) Find the missing values *', ***', **** ??, ??? c) What is the conclusion of this test? Give reasons for your answer.

A statistic is a measure that describes a population characteristic.