Unit 1: Exploring One-Variable Data

/ Unit 1: Exploring One-Variable Data

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You’ll be introduced to how statisticians approach variation and practice representing data, describing distributions of data, and drawing conclusions based on a theoretical distribution.

Question Difficulty:

Question	Difficulty	Students Solved
Probability from a Frequency Table	easy	109
Z-Score in a Normal Distribution	medium	76
Interpreting Proportions in a Histogram	medium	35
Relative Frequency Table Purpose	medium	46
Interpreting a Back-to-Back Stemplot Summary	medium	29
Defining Statistical Spread	easy	31
Rounding Error In Relative Frequencies	medium	25
Relative Frequency to Decimal Conversion	easy	27
Empirical Rule for a Normal Distribution	medium	21
Lower Outlier Boundary Calculation	medium	23
Effects of Linear Transformations on Summary Statistics	medium	15
Variable Types and the Mean	easy	18
Analyzing a Frequency Distribution Table	easy	17
Effects Of Skewness On Measures Of Center	easy	14
Effect of a Constant on Variance	easy	14
Standard Deviation and Data Transformation	medium	11
Characteristics of a Skewed Distribution	easy	13
Comparing Z-Scores Across Distributions	medium	10
Effect of Scaling on the Mean	easy	13
Measures of Central Tendency	easy	11

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Unit Leaderboard

Rank	User	Correct Count	Attempt Count	Time	Score
#1	thanooj_thutaram	152	189	0m 00s	14,830
#2	satyaachanti1710	29	32	0m 00s	2,870
#3	vayodha.verma	29	40	0m 00s	2,790
#4	ayoubmajid05	22	30	0m 00s	2,120
#5	cynthiayihan34	20	20	0m 00s	2,000
#6	marcus.rodriguez07	20	25	0m 00s	1,950
#7	adrianho1114	20	28	0m 00s	1,920
#8	goyalgopakshi	19	25	0m 05s	1,835
#9	shylohikhajiagbe	24	33	9m 40s	1,730
#10	yoonhyelaura	18	30	0m 00s	1,680

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