stdev

Getting “NA” when I run a standard deviation

由 偶尔善良 提交于 2020-01-11 01:51:28
问题 Quick question. I read my csv file into the variable data . It has a column label var , which has numerical values. When I run the command sd(data$var) I get [1] NA instead of my standard deviation. Could you please help me figure out what I am doing wrong? 回答1: Try sd(data$var, na.rm=TRUE) and then any NAs in the column var will be ignored. Will also pay to check out your data to make sure the NA's should be NA's and there haven't been read in errors, commands like head(data) , tail(data) ,

Getting “NA” when I run a standard deviation

由 空扰寡人 提交于 2020-01-11 01:50:06
问题 Quick question. I read my csv file into the variable data . It has a column label var , which has numerical values. When I run the command sd(data$var) I get [1] NA instead of my standard deviation. Could you please help me figure out what I am doing wrong? 回答1: Try sd(data$var, na.rm=TRUE) and then any NAs in the column var will be ignored. Will also pay to check out your data to make sure the NA's should be NA's and there haven't been read in errors, commands like head(data) , tail(data) ,

Issue in Error bars in Seaborn barplot - Python

由 左心房为你撑大大i 提交于 2019-12-24 22:25:31
问题 (Have already looked at similar questions but they don't answer this query) I have a dataframe df1 with below structure {'token': {0: '180816_031', 1: '180816_031', 2: '180816_031', 3: '180816_031', 4: '180816_031', 5: '180816_031', 6: '180816_031', 7: '180816_031', 8: '180816_031', 9: '180816_031'}, 'variable': {0: 'Unnamed: 0', 1: 'adj_active_polymerase', 2: 'adj_functional_sequencing_pores', 3: 'adj_high_quality_reads', 4: 'adj_single_pores', 5: 'cell_mask_bilayers_sum', 6: 'num_align_high

SQL - STDEVP or STDEV and how to use it?

由 与世无争的帅哥 提交于 2019-11-30 10:50:40
I have a table: LocationId OriginalValue Mean 1 0.45 3.99 2 0.33 3.99 3 16.74 3.99 4 3.31 3.99 and so forth... How would I work out the Standard Deviation using this table and also what would you recommend - STDEVP or STDEV ? To use it, simply: SELECT STDEVP(OriginalValue) FROM yourTable From below, you probably want STDEVP . From here : STDEV is used when the group of numbers being evaluated are only a partial sampling of the whole population. The denominator for dividing the sum of squared deviations is N-1, where N is the number of observations ( a count of items in the data set ).

SQL - STDEVP or STDEV and how to use it?

由 一曲冷凌霜 提交于 2019-11-29 16:04:02
问题 I have a table: LocationId OriginalValue Mean 1 0.45 3.99 2 0.33 3.99 3 16.74 3.99 4 3.31 3.99 and so forth... How would I work out the Standard Deviation using this table and also what would you recommend - STDEVP or STDEV ? 回答1: To use it, simply: SELECT STDEVP(OriginalValue) FROM yourTable From below, you probably want STDEVP . From here: STDEV is used when the group of numbers being evaluated are only a partial sampling of the whole population. The denominator for dividing the sum of
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