quiz 1 in stats (dash 7)

• interval - Afipe has an IQ of 101
• ordinal - Position of government officials
• nominal - product codes(brands)
• ratio - Lot areas of houses in a Village
• nominal - Ahmed is a Muslim.
• statistic - One hundred fifty out of 2,500 gave an average rating of 85.75% to the performance of school teachers
• parameter - The average age of the freshmen stadents is 17 years old.
• parameter - The range of the grades of G11 studyfits in a school is 35.68%
• statistic - The average monthly salary of 50% among 500 employees is 12.500.
• parameter - The variability of sales for the month of March is P560.00
• identification of the problem - By making a detailed observation of the world around you, you can formulate a concept worth to study
• collection of data - Refers to the different methods and techniques of gathering the data
• presentation of data - to visually show the reader nature of a particular aspect of the data.
• analysis of data - Process of deriving relevant information using different statistical tools
• interpretation of data - Task of drawing conclusions or inferences
• A - Which of the following is a discrete random variable?A.the number of students in a virtual classroomB.the average amount of electricity consumedC.the amount of paint used in repainting a classroomD.the average weight of male athletes
• D - An outcome that describes the level of certainty.A.Sample SpaćeB.Random VariableC.EventD.Probability
• C - What do you call the set of all possible outcomes of an experiment?A.EventB.Infinite SpaceC.Sample SpaceD.Random Variable
• A - is a function that associates a real number to each element in the sample space, determined by chance.A.Random VariableB.Probability
• A - random variable is a possible outcome is countable. if its set of possible outcomes is countable. A.DiscreteB. ContinuousC. InfiniteD. Finite
• A - What is the "7" in rolling a die? probability of getting a numberA.0 or 0%B.1 or 100%C. InfiniteD. Finite
• B - A random variable is a values on a continuous scale.A.DiscreteB. Continuous
• A-In tossing a single coin, what is the probability of getting a head?A.1/2B.1/4C. 0D. 1
• D - Two dice are rolled, find the probability that the sum is less than 13.A.1/2B. 1/4C. 0D. 1
• A - Find the probability of getting ace of spade in a deck of card.A.1/26B. 1/13C.0D. 1/52
• true - Tails of the normal curve are asymptotic to the horizontal axis.
• true - if the data is evenly distributed, you may come up with bell curve.
• true - A bell curve has a small percentage of the tails on both talis and the bigger percentage is on the inner part of the curve.
• false - Normal curve is ASYMMETRICAL about its center
• false -if the data are normally distributed, mean is always greater than the median and mode
• true - Z-SCORE is the standard score which is the measurement of the distance between the raw score and the mean; and which unit of measure is in standard deviation
• false - in a normal probability distribution, mean is equal to 1 ape standard deviation is equal to 0.
• false - The total area under the normal curve is 100