- what is statistics ⇒ study, collection , analysis, interpretation and presentation of data
- which of the following is a type of data ⇒ Qualitative and Quantitative
- mean of the dataset {2,4,6,8,10} ⇒ 6
- which measure of central tendency is affected by extreme values ⇒ mean
- median of {1,3,5,7,9} ⇒ 5
- mode of {1,2,2,3,4} ⇒ 2
- in normal distribution ⇒ mean = mode = median
- what is the range of the dataset {3,7,9,15} ⇒ 12
- which of the following is a measure of dispersion ⇒ range
- the probability of an impossible event is ⇒ 0
- what is the standard deviation of the dataset {2,4,4,4,5,5,7,9}
⇒ 2
- A histogram is used to display ⇒ continuous data
- which is not a mode of central tendency ⇒ variance
- the range is calculated by ⇒ subtracting the smallest value of the dataset from the largest value
- middle value of an ordered data set is ⇒ median
- which of the following measures how spread out the values of the data set are ⇒ dispersion
- what type of graph is used to represent categorical data ⇒ pie chart
- variance is the square of the ⇒ standard deviation
- which of the following measures the strength and direction of a linear relation between two variables ⇒ correlation coefficient
- -1 ⇒ perfect negative correlation
- +1 ⇒ perfect positive correlation
- 0 ⇒ NO correlation
- main purpose of regression analysis ⇒ to predict the value of the dependent variable from the independent variable
- which of the following is used to describe categorical data ⇒ bar plot
- In statistics, a population refers ⇒ to the entire set of individuals of interest
- which measure is least sensitive to extreme values ⇒ median
- main characteristics of binomial experiment ⇒
- fixed number of trials
- two possible outcomes (thus, binomial)
- independent trials
- which of the following is a branch of statistics ⇒ both inferential and descriptive ⇒ production
- all wrong bc
- mode ⇒ 13
- median 11, 13,13,17,19,23,25 ⇒ 17
- mean of tossing 4 coins in the air ⇒ 2
- mean of 6,1,5,8,10 ⇒ 6
- geometric mean of 1,3,9,3 ⇒ 3
- variance of 3,9,5,6,7 ⇒ 4
- mean, mode and median of 5,8,12,17,12,14,6,8,12,10 ⇒ 10,12,11
- 5,5,6,7,9,10,13 ⇒ 8,5,7
- RANGE OF 7,47,8,42,47,95,42,96,2 ⇒ 94
- mean deviation bout mean for 7,47,8,42,47,95,42,96,3 ⇒ 27
- variance of 7,47,8,42,47,95,42,96,3 ⇒ 1024
- standard deviation ⇒ 31.9
- 99 -17 ⇒82
- median ⇒ 2 equal halves
- measure of dispersion ⇒ standard deviation
- mode ⇒most frequency
- mean ⇒ 5.2
- mode ⇒ 5
- stats ⇒ all