Statıstıcs I (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
Which is TRUE aboout the classical probability?
- 2At a local district, there are three different pizza restaurants denoted here by A, B, and C. It is known that 40% of all customers give an order from company A, whereas 35% give an order from company B, and 25% give an order from company C. It is also known that 10% of the motorcycles from company A, 20% of the motorcycles from company B, and 5% of the motorcycles from company C need to a checkup before the next pizza delivery. What is the probability that a motorcycle returned to the restaurant needs a checkup before the next pizza delivery?
- 3
Data : 1.000, 1.000, 1.200, 1.200, 1.200, 1.400, 1.400, 1.500, 1.500, 1.500, 1.600, 1.600, 1.800, 1.800, 1.800, 2.000, 2.000, 2.500, 2.500, 2.500. What is the IQR of these data ?
- 4
There are 36 cards in a box with three different colors-6 yellow, 12 blue, 18 red. What is the probability of obtaining two yellow cards when randomly drawing two cards?
- 5
Data format : (class interval, frequency) data : (100 up to 120, 1), (120 up to 180, 2), (180 up to 200, 1), (200 up to 250, 1). What is the sample standard deviation of these data ?
- 6
Which of the followings cannot be given as an example for random experiments?
- 7
For X which is a continuous random variable that is uniformly distributed and takes values between 3 and 9. What is the variance of the random variable X ?
- 8
How many different ways can the letters in the word COMMON be arranged?
- 9
Which option gives the correct terms to complete the blanks given in the graph in the correct order ( from 1 to 4)?
- 10
What is the probability of two dices landing on numbers that when sum up is equal to 6?
- 11
A call center receives, on average, 6 calls per minute and number of calls follows a Poisson distribution. What is the probability of receiving at most 2 calls at a given minute?
- 12
Which of the following is not true about box plot?
- 13
According to the properties that probability density function f(x) of normal distribution has, which of the following is not true?
- 14
"Which type of transportation vehicle do you use most often?
Answer:.............................................................."
Which type of questionnaire question is the one above?
- 15
Which of the following is not done by using statistics?
- 16
Which one of the following is an average number of values?
- 17
What is the midrange of the following data set?
11, 18, 10, 25, 25, 81, 26, 18, 20, 35, 14, 11, 18, 18, 25, 20, 48
- 18
Which of the following scales have a natural or zero-valued base that cannot be changed?
- 19
What is the geometric mean of the following data set?
8, 27, 64
- 20
What type of variable are your exam grades such as A, B?