Statistics

Q.

What is meant by statistical series? Give the names of statistical series.

Q. Find the mean of first six multiples of 4.

Q. Which of the following can be statistical questions?

1. How many bikes are parked in the school parking lot over the weekend?
2. Which is the most popular snack from the school's vending machine?
3. How old are the dogs who live on the street?
4. How many natural calamities in the USA have occurred per year since 2010?

1. ($1$) and ($2$) only.
2. ($2$) and ($4$) only.
3. ($1$), ($4$) and ($4$) only.
4. All of the above.

Q. Which of the following can be treated as important function of statistics?

1. Statistics helps to formulate hypothesis and test its validity.
2. All of the above
3. Statistics makes forecasting easier.
4. Statistics helps in the formulation of various policies.

Q. Is the following data statistical?

Name of employees	Per month salary ($)
Alexa	2500
James	2600
Henry	1500
Jack	900

1. yes
2. no

Q. Which is not a stage of statistical inquiry?

1. Collection of data
2. Analysis of numerical data
3. Organisation and presentation of numerical data
4. Preciseness and definiteness

Q. A question that requires multiple data points to answer is called a _________ question.

1. mathematical
2. scientific
3. logical
4. statistical

Q. ________ helps in presenting complex data in a suitable tabular, diagrammatic and graphic form for an easy and clear comprehension of the data.

1. Mensuration
2. Statistics
3. Survey
4. Set theory

Q. Which of the following is/are numerical data?

1. 
2. 
3. 
4. 

Q. Emma has collected the blood groups of all of her friends. Is this statistical data?

1. yes
2. no

Q.

Tornadoes in Region A travel significantly farther than tornadoes in Region B. The tornadoes in Region A travel a median of $10$ miles. Create a double box-and-whisker plot that can represent the distances travelled by the tornadoes in the two regions.

Q. The characteristic of good test data is following except :-

1. users do not participate at this preliminary stage
2. Should be comprehensive
3. Every statement should be ececuted
4. All of the above